8820740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 19643904

約数和(自身を除く): 10823164

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 347, 410, 620, 694, 820, 1271, 1388, 1735, 2542, 3470, 5084, 6355, 6940, 10757, 12710, 14227, 21514, 25420, 28454, 43028, 53785, 56908, 71135, 107570, 142270, 215140, 284540, 441037, 882074, 1764148, 2205185, 4410370, 8820740]

約数ペア:

[(1, 8820740), (2, 4410370), (4, 2205185), (5, 1764148), (10, 882074), (20, 441037), (31, 284540), (41, 215140), (62, 142270), (82, 107570), (124, 71135), (155, 56908), (164, 53785), (205, 43028), (310, 28454), (347, 25420), (410, 21514), (620, 14227), (694, 12710), (820, 10757), (1271, 6940), (1388, 6355), (1735, 5084), (2542, 3470)]