21074560

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1$

素因数の和:198

約数の個数: 128

約数和(自身を含む): 57834000

約数和(自身を除く): 36759440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 149, 160, 170, 208, 221, 260, 272, 298, 320, 340, 416, 442, 520, 544, 596, 640, 680, 745, 832, 884, 1040, 1088, 1105, 1192, 1360, 1490, 1664, 1768, 1937, 2080, 2176, 2210, 2384, 2533, 2720, 2980, 3536, 3874, 4160, 4420, 4768, 5066, 5440, 5960, 7072, 7748, 8320, 8840, 9536, 9685, 10132, 10880, 11920, 12665, 14144, 15496, 17680, 19072, 19370, 20264, 23840, 25330, 28288, 30992, 32929, 35360, 38740, 40528, 47680, 50660, 61984, 65858, 70720, 77480, 81056, 95360, 101320, 123968, 131716, 141440, 154960, 162112, 164645, 202640, 247936, 263432, 309920, 324224, 329290, 405280, 526864, 619840, 658580, 810560, 1053728, 1239680, 1317160, 1621120, 2107456, 2634320, 4214912, 5268640, 10537280, 21074560]

約数ペア:

[(1, 21074560), (2, 10537280), (4, 5268640), (5, 4214912), (8, 2634320), (10, 2107456), (13, 1621120), (16, 1317160), (17, 1239680), (20, 1053728), (26, 810560), (32, 658580), (34, 619840), (40, 526864), (52, 405280), (64, 329290), (65, 324224), (68, 309920), (80, 263432), (85, 247936), (104, 202640), (128, 164645), (130, 162112), (136, 154960), (149, 141440), (160, 131716), (170, 123968), (208, 101320), (221, 95360), (260, 81056), (272, 77480), (298, 70720), (320, 65858), (340, 61984), (416, 50660), (442, 47680), (520, 40528), (544, 38740), (596, 35360), (640, 32929), (680, 30992), (745, 28288), (832, 25330), (884, 23840), (1040, 20264), (1088, 19370), (1105, 19072), (1192, 17680), (1360, 15496), (1490, 14144), (1664, 12665), (1768, 11920), (1937, 10880), (2080, 10132), (2176, 9685), (2210, 9536), (2384, 8840), (2533, 8320), (2720, 7748), (2980, 7072), (3536, 5960), (3874, 5440), (4160, 5066), (4420, 4768)]