31854160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:416

約数の個数: 80

約数和(自身を含む): 80776080

約数和(自身を除く): 48921920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 109, 130, 208, 218, 260, 281, 436, 520, 545, 562, 872, 1040, 1090, 1124, 1405, 1417, 1744, 2180, 2248, 2810, 2834, 3653, 4360, 4496, 5620, 5668, 7085, 7306, 8720, 11240, 11336, 14170, 14612, 18265, 22480, 22672, 28340, 29224, 30629, 36530, 56680, 58448, 61258, 73060, 113360, 122516, 146120, 153145, 245032, 292240, 306290, 398177, 490064, 612580, 796354, 1225160, 1592708, 1990885, 2450320, 3185416, 3981770, 6370832, 7963540, 15927080, 31854160]

約数ペア:

[(1, 31854160), (2, 15927080), (4, 7963540), (5, 6370832), (8, 3981770), (10, 3185416), (13, 2450320), (16, 1990885), (20, 1592708), (26, 1225160), (40, 796354), (52, 612580), (65, 490064), (80, 398177), (104, 306290), (109, 292240), (130, 245032), (208, 153145), (218, 146120), (260, 122516), (281, 113360), (436, 73060), (520, 61258), (545, 58448), (562, 56680), (872, 36530), (1040, 30629), (1090, 29224), (1124, 28340), (1405, 22672), (1417, 22480), (1744, 18265), (2180, 14612), (2248, 14170), (2810, 11336), (2834, 11240), (3653, 8720), (4360, 7306), (4496, 7085), (5620, 5668)]