638457908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1\times {\mathrm{557}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 1237420800

約数和(自身を除く): 598962892

約数列:

[1, 2, 4, 11, 22, 44, 109, 218, 239, 436, 478, 557, 956, 1114, 1199, 2228, 2398, 2629, 4796, 5258, 6127, 10516, 12254, 24508, 26051, 52102, 60713, 104204, 121426, 133123, 242852, 266246, 286561, 532492, 573122, 667843, 1146244, 1335686, 1464353, 2671372, 2928706, 5857412, 14510407, 29020814, 58041628, 159614477, 319228954, 638457908]

約数ペア:

[(1, 638457908), (2, 319228954), (4, 159614477), (11, 58041628), (22, 29020814), (44, 14510407), (109, 5857412), (218, 2928706), (239, 2671372), (436, 1464353), (478, 1335686), (557, 1146244), (956, 667843), (1114, 573122), (1199, 532492), (2228, 286561), (2398, 266246), (2629, 242852), (4796, 133123), (5258, 121426), (6127, 104204), (10516, 60713), (12254, 52102), (24508, 26051)]