20854860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26737}}^1$

素因数の和:26762

約数の個数: 48

約数和(自身を含む): 62887776

約数和(自身を除く): 42032916

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26737, 53474, 80211, 106948, 133685, 160422, 267370, 320844, 347581, 401055, 534740, 695162, 802110, 1042743, 1390324, 1604220, 1737905, 2085486, 3475810, 4170972, 5213715, 6951620, 10427430, 20854860]

約数ペア:

[(1, 20854860), (2, 10427430), (3, 6951620), (4, 5213715), (5, 4170972), (6, 3475810), (10, 2085486), (12, 1737905), (13, 1604220), (15, 1390324), (20, 1042743), (26, 802110), (30, 695162), (39, 534740), (52, 401055), (60, 347581), (65, 320844), (78, 267370), (130, 160422), (156, 133685), (195, 106948), (260, 80211), (390, 53474), (780, 26737)]