31399940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{10979}}^1$

素因数の和:11012

約数の個数: 48

約数和(自身を含む): 77474880

約数和(自身を除く): 46074940

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 10979, 21958, 43916, 54895, 109790, 120769, 142727, 219580, 241538, 285454, 483076, 570908, 603845, 713635, 1207690, 1427270, 1569997, 2415380, 2854540, 3139994, 6279988, 7849985, 15699970, 31399940]

約数ペア:

[(1, 31399940), (2, 15699970), (4, 7849985), (5, 6279988), (10, 3139994), (11, 2854540), (13, 2415380), (20, 1569997), (22, 1427270), (26, 1207690), (44, 713635), (52, 603845), (55, 570908), (65, 483076), (110, 285454), (130, 241538), (143, 219580), (220, 142727), (260, 120769), (286, 109790), (572, 54895), (715, 43916), (1430, 21958), (2860, 10979)]