1287942760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{5591}}^1$

素因数の和:6058

約数の個数: 64

約数和(自身を含む): 3128388480

約数和(自身を除く): 1840445720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 443, 520, 886, 1772, 2215, 3544, 4430, 5591, 5759, 8860, 11182, 11518, 17720, 22364, 23036, 27955, 28795, 44728, 46072, 55910, 57590, 72683, 111820, 115180, 145366, 223640, 230360, 290732, 363415, 581464, 726830, 1453660, 2476813, 2907320, 4953626, 9907252, 12384065, 19814504, 24768130, 32198569, 49536260, 64397138, 99072520, 128794276, 160992845, 257588552, 321985690, 643971380, 1287942760]

約数ペア:

[(1, 1287942760), (2, 643971380), (4, 321985690), (5, 257588552), (8, 160992845), (10, 128794276), (13, 99072520), (20, 64397138), (26, 49536260), (40, 32198569), (52, 24768130), (65, 19814504), (104, 12384065), (130, 9907252), (260, 4953626), (443, 2907320), (520, 2476813), (886, 1453660), (1772, 726830), (2215, 581464), (3544, 363415), (4430, 290732), (5591, 230360), (5759, 223640), (8860, 145366), (11182, 115180), (11518, 111820), (17720, 72683), (22364, 57590), (23036, 55910), (27955, 46072), (28795, 44728)]