15721444375

素因数分解:

$5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{3499}}^1$

素因数の和:3618

約数の個数: 80

約数和(自身を含む): 24492160000

約数和(自身を除く): 8770715625

約数列:

[1, 5, 7, 13, 25, 35, 65, 79, 91, 125, 175, 325, 395, 455, 553, 625, 875, 1027, 1625, 1975, 2275, 2765, 3499, 4375, 5135, 7189, 8125, 9875, 11375, 13825, 17495, 24493, 25675, 35945, 45487, 49375, 56875, 69125, 87475, 122465, 128375, 179725, 227435, 276421, 318409, 345625, 437375, 612325, 641875, 898625, 1137175, 1382105, 1592045, 1934947, 2186875, 3061625, 3593473, 4493125, 5685875, 6910525, 7960225, 9674735, 15308125, 17967365, 25154311, 28429375, 34552625, 39801125, 48373675, 89836825, 125771555, 172763125, 199005625, 241868375, 449184125, 628857775, 1209341875, 2245920625, 3144288875, 15721444375]

約数ペア:

[(1, 15721444375), (5, 3144288875), (7, 2245920625), (13, 1209341875), (25, 628857775), (35, 449184125), (65, 241868375), (79, 199005625), (91, 172763125), (125, 125771555), (175, 89836825), (325, 48373675), (395, 39801125), (455, 34552625), (553, 28429375), (625, 25154311), (875, 17967365), (1027, 15308125), (1625, 9674735), (1975, 7960225), (2275, 6910525), (2765, 5685875), (3499, 4493125), (4375, 3593473), (5135, 3061625), (7189, 2186875), (8125, 1934947), (9875, 1592045), (11375, 1382105), (13825, 1137175), (17495, 898625), (24493, 641875), (25675, 612325), (35945, 437375), (45487, 345625), (49375, 318409), (56875, 276421), (69125, 227435), (87475, 179725), (122465, 128375)]