20178158975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{379}}^1\times {\mathrm{1531}}^1$

素因数の和:2040

約数の個数: 48

約数和(自身を含む): 27287003520

約数和(自身を除く): 7108844545

約数列:

[1, 5, 13, 25, 65, 107, 325, 379, 535, 1391, 1531, 1895, 2675, 4927, 6955, 7655, 9475, 19903, 24635, 34775, 38275, 40553, 99515, 123175, 163817, 202765, 497575, 527189, 580249, 819085, 1013825, 2129621, 2635945, 2901245, 4095425, 7543237, 10648105, 13179725, 14506225, 37716185, 53240525, 62086643, 188580925, 310433215, 807126359, 1552166075, 4035631795, 20178158975]

約数ペア:

[(1, 20178158975), (5, 4035631795), (13, 1552166075), (25, 807126359), (65, 310433215), (107, 188580925), (325, 62086643), (379, 53240525), (535, 37716185), (1391, 14506225), (1531, 13179725), (1895, 10648105), (2675, 7543237), (4927, 4095425), (6955, 2901245), (7655, 2635945), (9475, 2129621), (19903, 1013825), (24635, 819085), (34775, 580249), (38275, 527189), (40553, 497575), (99515, 202765), (123175, 163817)]