20880240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{241}}^1$

素因数の和:295

約数の個数: 120

約数和(自身を含む): 68598288

約数和(自身を除く): 47718048

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 241, 285, 304, 361, 380, 456, 482, 570, 722, 723, 760, 912, 964, 1083, 1140, 1205, 1444, 1446, 1520, 1805, 1928, 2166, 2280, 2410, 2888, 2892, 3610, 3615, 3856, 4332, 4560, 4579, 4820, 5415, 5776, 5784, 7220, 7230, 8664, 9158, 9640, 10830, 11568, 13737, 14440, 14460, 17328, 18316, 19280, 21660, 22895, 27474, 28880, 28920, 36632, 43320, 45790, 54948, 57840, 68685, 73264, 86640, 87001, 91580, 109896, 137370, 174002, 183160, 219792, 261003, 274740, 348004, 366320, 435005, 522006, 549480, 696008, 870010, 1044012, 1098960, 1305015, 1392016, 1740020, 2088024, 2610030, 3480040, 4176048, 5220060, 6960080, 10440120, 20880240]

約数ペア:

[(1, 20880240), (2, 10440120), (3, 6960080), (4, 5220060), (5, 4176048), (6, 3480040), (8, 2610030), (10, 2088024), (12, 1740020), (15, 1392016), (16, 1305015), (19, 1098960), (20, 1044012), (24, 870010), (30, 696008), (38, 549480), (40, 522006), (48, 435005), (57, 366320), (60, 348004), (76, 274740), (80, 261003), (95, 219792), (114, 183160), (120, 174002), (152, 137370), (190, 109896), (228, 91580), (240, 87001), (241, 86640), (285, 73264), (304, 68685), (361, 57840), (380, 54948), (456, 45790), (482, 43320), (570, 36632), (722, 28920), (723, 28880), (760, 27474), (912, 22895), (964, 21660), (1083, 19280), (1140, 18316), (1205, 17328), (1444, 14460), (1446, 14440), (1520, 13737), (1805, 11568), (1928, 10830), (2166, 9640), (2280, 9158), (2410, 8664), (2888, 7230), (2892, 7220), (3610, 5784), (3615, 5776), (3856, 5415), (4332, 4820), (4560, 4579)]