20123057968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{977}}^1\times {\mathrm{99023}}^1$

素因数の和:100021

約数の個数: 40

約数和(自身を含む): 42030934848

約数和(自身を除く): 21907876880

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 977, 1954, 3908, 7816, 12701, 15632, 25402, 50804, 99023, 101608, 198046, 203216, 396092, 792184, 1287299, 1584368, 2574598, 5149196, 10298392, 20596784, 96745471, 193490942, 386981884, 773963768, 1257691123, 1547927536, 2515382246, 5030764492, 10061528984, 20123057968]

約数ペア:

[(1, 20123057968), (2, 10061528984), (4, 5030764492), (8, 2515382246), (13, 1547927536), (16, 1257691123), (26, 773963768), (52, 386981884), (104, 193490942), (208, 96745471), (977, 20596784), (1954, 10298392), (3908, 5149196), (7816, 2574598), (12701, 1584368), (15632, 1287299), (25402, 792184), (50804, 396092), (99023, 203216), (101608, 198046)]