31490040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{661}}^1$

素因数の和:1072

約数の個数: 64

約数和(自身を含む): 94851360

約数和(自身を除く): 63361320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 397, 661, 794, 1191, 1322, 1588, 1983, 1985, 2382, 2644, 3176, 3305, 3966, 3970, 4764, 5288, 5955, 6610, 7932, 7940, 9528, 9915, 11910, 13220, 15864, 15880, 19830, 23820, 26440, 39660, 47640, 79320, 262417, 524834, 787251, 1049668, 1312085, 1574502, 2099336, 2624170, 3149004, 3936255, 5248340, 6298008, 7872510, 10496680, 15745020, 31490040]

約数ペア:

[(1, 31490040), (2, 15745020), (3, 10496680), (4, 7872510), (5, 6298008), (6, 5248340), (8, 3936255), (10, 3149004), (12, 2624170), (15, 2099336), (20, 1574502), (24, 1312085), (30, 1049668), (40, 787251), (60, 524834), (120, 262417), (397, 79320), (661, 47640), (794, 39660), (1191, 26440), (1322, 23820), (1588, 19830), (1983, 15880), (1985, 15864), (2382, 13220), (2644, 11910), (3176, 9915), (3305, 9528), (3966, 7940), (3970, 7932), (4764, 6610), (5288, 5955)]