2745980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 6150144

約数和(自身を除く): 3404164

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 103, 124, 155, 172, 206, 215, 310, 412, 430, 515, 620, 860, 1030, 1333, 2060, 2666, 3193, 4429, 5332, 6386, 6665, 8858, 12772, 13330, 15965, 17716, 22145, 26660, 31930, 44290, 63860, 88580, 137299, 274598, 549196, 686495, 1372990, 2745980]

約数ペア:

[(1, 2745980), (2, 1372990), (4, 686495), (5, 549196), (10, 274598), (20, 137299), (31, 88580), (43, 63860), (62, 44290), (86, 31930), (103, 26660), (124, 22145), (155, 17716), (172, 15965), (206, 13330), (215, 12772), (310, 8858), (412, 6665), (430, 6386), (515, 5332), (620, 4429), (860, 3193), (1030, 2666), (1333, 2060)]