131181720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17921}}^1$

素因数の和:17996

約数の個数: 64

約数和(自身を含む): 400019040

約数和(自身を除く): 268837320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 3660, 7320, 17921, 35842, 53763, 71684, 89605, 107526, 143368, 179210, 215052, 268815, 358420, 430104, 537630, 716840, 1075260, 1093181, 2150520, 2186362, 3279543, 4372724, 5465905, 6559086, 8745448, 10931810, 13118172, 16397715, 21863620, 26236344, 32795430, 43727240, 65590860, 131181720]

約数ペア:

[(1, 131181720), (2, 65590860), (3, 43727240), (4, 32795430), (5, 26236344), (6, 21863620), (8, 16397715), (10, 13118172), (12, 10931810), (15, 8745448), (20, 6559086), (24, 5465905), (30, 4372724), (40, 3279543), (60, 2186362), (61, 2150520), (120, 1093181), (122, 1075260), (183, 716840), (244, 537630), (305, 430104), (366, 358420), (488, 268815), (610, 215052), (732, 179210), (915, 143368), (1220, 107526), (1464, 89605), (1830, 71684), (2440, 53763), (3660, 35842), (7320, 17921)]