20665920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:153

約数の個数: 224

約数和(自身を含む): 76078080

約数和(自身を除く): 55412160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 19, 20, 22, 24, 30, 32, 33, 38, 40, 44, 48, 55, 57, 60, 64, 66, 76, 80, 88, 95, 96, 103, 110, 114, 120, 132, 152, 160, 165, 176, 190, 192, 206, 209, 220, 228, 240, 264, 285, 304, 309, 320, 330, 352, 380, 412, 418, 440, 456, 480, 515, 528, 570, 608, 618, 627, 660, 704, 760, 824, 836, 880, 912, 960, 1030, 1045, 1056, 1133, 1140, 1216, 1236, 1254, 1320, 1520, 1545, 1648, 1672, 1760, 1824, 1957, 2060, 2090, 2112, 2266, 2280, 2472, 2508, 2640, 3040, 3090, 3135, 3296, 3344, 3399, 3520, 3648, 3914, 4120, 4180, 4532, 4560, 4944, 5016, 5280, 5665, 5871, 6080, 6180, 6270, 6592, 6688, 6798, 7828, 8240, 8360, 9064, 9120, 9785, 9888, 10032, 10560, 11330, 11742, 12360, 12540, 13376, 13596, 15656, 16480, 16720, 16995, 18128, 18240, 19570, 19776, 20064, 21527, 22660, 23484, 24720, 25080, 27192, 29355, 31312, 32960, 33440, 33990, 36256, 39140, 40128, 43054, 45320, 46968, 49440, 50160, 54384, 58710, 62624, 64581, 66880, 67980, 72512, 78280, 86108, 90640, 93936, 98880, 100320, 107635, 108768, 117420, 125248, 129162, 135960, 156560, 172216, 181280, 187872, 200640, 215270, 217536, 234840, 258324, 271920, 313120, 322905, 344432, 362560, 375744, 430540, 469680, 516648, 543840, 626240, 645810, 688864, 861080, 939360, 1033296, 1087680, 1291620, 1377728, 1722160, 1878720, 2066592, 2583240, 3444320, 4133184, 5166480, 6888640, 10332960, 20665920]

約数ペア:

[(1, 20665920), (2, 10332960), (3, 6888640), (4, 5166480), (5, 4133184), (6, 3444320), (8, 2583240), (10, 2066592), (11, 1878720), (12, 1722160), (15, 1377728), (16, 1291620), (19, 1087680), (20, 1033296), (22, 939360), (24, 861080), (30, 688864), (32, 645810), (33, 626240), (38, 543840), (40, 516648), (44, 469680), (48, 430540), (55, 375744), (57, 362560), (60, 344432), (64, 322905), (66, 313120), (76, 271920), (80, 258324), (88, 234840), (95, 217536), (96, 215270), (103, 200640), (110, 187872), (114, 181280), (120, 172216), (132, 156560), (152, 135960), (160, 129162), (165, 125248), (176, 117420), (190, 108768), (192, 107635), (206, 100320), (209, 98880), (220, 93936), (228, 90640), (240, 86108), (264, 78280), (285, 72512), (304, 67980), (309, 66880), (320, 64581), (330, 62624), (352, 58710), (380, 54384), (412, 50160), (418, 49440), (440, 46968), (456, 45320), (480, 43054), (515, 40128), (528, 39140), (570, 36256), (608, 33990), (618, 33440), (627, 32960), (660, 31312), (704, 29355), (760, 27192), (824, 25080), (836, 24720), (880, 23484), (912, 22660), (960, 21527), (1030, 20064), (1045, 19776), (1056, 19570), (1133, 18240), (1140, 18128), (1216, 16995), (1236, 16720), (1254, 16480), (1320, 15656), (1520, 13596), (1545, 13376), (1648, 12540), (1672, 12360), (1760, 11742), (1824, 11330), (1957, 10560), (2060, 10032), (2090, 9888), (2112, 9785), (2266, 9120), (2280, 9064), (2472, 8360), (2508, 8240), (2640, 7828), (3040, 6798), (3090, 6688), (3135, 6592), (3296, 6270), (3344, 6180), (3399, 6080), (3520, 5871), (3648, 5665), (3914, 5280), (4120, 5016), (4180, 4944), (4532, 4560)]