15804920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 37346400

約数和(自身を除く): 21541480

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 59, 74, 118, 148, 181, 185, 236, 295, 296, 362, 370, 472, 590, 724, 740, 905, 1180, 1448, 1480, 1810, 2183, 2360, 3620, 4366, 6697, 7240, 8732, 10679, 10915, 13394, 17464, 21358, 21830, 26788, 33485, 42716, 43660, 53395, 53576, 66970, 85432, 87320, 106790, 133940, 213580, 267880, 395123, 427160, 790246, 1580492, 1975615, 3160984, 3951230, 7902460, 15804920]

約数ペア:

[(1, 15804920), (2, 7902460), (4, 3951230), (5, 3160984), (8, 1975615), (10, 1580492), (20, 790246), (37, 427160), (40, 395123), (59, 267880), (74, 213580), (118, 133940), (148, 106790), (181, 87320), (185, 85432), (236, 66970), (295, 53576), (296, 53395), (362, 43660), (370, 42716), (472, 33485), (590, 26788), (724, 21830), (740, 21358), (905, 17464), (1180, 13394), (1448, 10915), (1480, 10679), (1810, 8732), (2183, 7240), (2360, 6697), (3620, 4366)]