31268120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{383}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 76446720

約数和(自身を除く): 45178600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 314, 383, 520, 628, 766, 785, 1256, 1532, 1570, 1915, 2041, 3064, 3140, 3830, 4082, 4979, 6280, 7660, 8164, 9958, 10205, 15320, 16328, 19916, 20410, 24895, 39832, 40820, 49790, 60131, 81640, 99580, 120262, 199160, 240524, 300655, 481048, 601310, 781703, 1202620, 1563406, 2405240, 3126812, 3908515, 6253624, 7817030, 15634060, 31268120]

約数ペア:

[(1, 31268120), (2, 15634060), (4, 7817030), (5, 6253624), (8, 3908515), (10, 3126812), (13, 2405240), (20, 1563406), (26, 1202620), (40, 781703), (52, 601310), (65, 481048), (104, 300655), (130, 240524), (157, 199160), (260, 120262), (314, 99580), (383, 81640), (520, 60131), (628, 49790), (766, 40820), (785, 39832), (1256, 24895), (1532, 20410), (1570, 19916), (1915, 16328), (2041, 15320), (3064, 10205), (3140, 9958), (3830, 8164), (4082, 7660), (4979, 6280)]