251285840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:337

約数の個数: 160

約数和(自身を含む): 680018976

約数和(自身を除く): 428733136

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 61, 65, 68, 80, 85, 104, 122, 130, 136, 170, 208, 221, 233, 244, 260, 272, 305, 340, 442, 466, 488, 520, 610, 680, 793, 884, 932, 976, 1037, 1040, 1105, 1165, 1220, 1360, 1586, 1768, 1864, 2074, 2210, 2330, 2440, 3029, 3172, 3536, 3728, 3961, 3965, 4148, 4420, 4660, 4880, 5185, 6058, 6344, 7922, 7930, 8296, 8840, 9320, 10370, 12116, 12688, 13481, 14213, 15145, 15844, 15860, 16592, 17680, 18640, 19805, 20740, 24232, 26962, 28426, 30290, 31688, 31720, 39610, 41480, 48464, 51493, 53924, 56852, 60580, 63376, 63440, 67405, 71065, 79220, 82960, 102986, 107848, 113704, 121160, 134810, 142130, 158440, 184769, 205972, 215696, 227408, 241621, 242320, 257465, 269620, 284260, 316880, 369538, 411944, 483242, 514930, 539240, 568520, 739076, 823888, 923845, 966484, 1029860, 1078480, 1137040, 1208105, 1478152, 1847690, 1932968, 2059720, 2416210, 2956304, 3141073, 3695380, 3865936, 4119440, 4832420, 6282146, 7390760, 9664840, 12564292, 14781520, 15705365, 19329680, 25128584, 31410730, 50257168, 62821460, 125642920, 251285840]

約数ペア:

[(1, 251285840), (2, 125642920), (4, 62821460), (5, 50257168), (8, 31410730), (10, 25128584), (13, 19329680), (16, 15705365), (17, 14781520), (20, 12564292), (26, 9664840), (34, 7390760), (40, 6282146), (52, 4832420), (61, 4119440), (65, 3865936), (68, 3695380), (80, 3141073), (85, 2956304), (104, 2416210), (122, 2059720), (130, 1932968), (136, 1847690), (170, 1478152), (208, 1208105), (221, 1137040), (233, 1078480), (244, 1029860), (260, 966484), (272, 923845), (305, 823888), (340, 739076), (442, 568520), (466, 539240), (488, 514930), (520, 483242), (610, 411944), (680, 369538), (793, 316880), (884, 284260), (932, 269620), (976, 257465), (1037, 242320), (1040, 241621), (1105, 227408), (1165, 215696), (1220, 205972), (1360, 184769), (1586, 158440), (1768, 142130), (1864, 134810), (2074, 121160), (2210, 113704), (2330, 107848), (2440, 102986), (3029, 82960), (3172, 79220), (3536, 71065), (3728, 67405), (3961, 63440), (3965, 63376), (4148, 60580), (4420, 56852), (4660, 53924), (4880, 51493), (5185, 48464), (6058, 41480), (6344, 39610), (7922, 31720), (7930, 31688), (8296, 30290), (8840, 28426), (9320, 26962), (10370, 24232), (12116, 20740), (12688, 19805), (13481, 18640), (14213, 17680), (15145, 16592), (15844, 15860)]