20129791851

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{31333}}^1$

素因数の和:31405

約数の個数: 72

約数和(自身を含む): 35015118320

約数和(自身を除く): 14885326469

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 117, 153, 171, 221, 247, 289, 323, 663, 741, 867, 969, 1989, 2223, 2601, 2907, 3757, 4199, 5491, 11271, 12597, 16473, 31333, 33813, 37791, 49419, 71383, 93999, 214149, 281997, 407329, 532661, 595327, 642447, 1221987, 1597983, 1785981, 3665961, 4793949, 5357943, 6924593, 7739251, 9055237, 10120559, 20773779, 23217753, 27165711, 30361677, 62321337, 69653259, 81497133, 91085031, 117718081, 131567267, 172049503, 353154243, 394701801, 516148509, 1059462729, 1184105403, 1548445527, 2236643539, 6709930617, 20129791851]

約数ペア:

[(1, 20129791851), (3, 6709930617), (9, 2236643539), (13, 1548445527), (17, 1184105403), (19, 1059462729), (39, 516148509), (51, 394701801), (57, 353154243), (117, 172049503), (153, 131567267), (171, 117718081), (221, 91085031), (247, 81497133), (289, 69653259), (323, 62321337), (663, 30361677), (741, 27165711), (867, 23217753), (969, 20773779), (1989, 10120559), (2223, 9055237), (2601, 7739251), (2907, 6924593), (3757, 5357943), (4199, 4793949), (5491, 3665961), (11271, 1785981), (12597, 1597983), (16473, 1221987), (31333, 642447), (33813, 595327), (37791, 532661), (49419, 407329), (71383, 281997), (93999, 214149)]