1640383960

素因数分解:

$2^3\times 5^1\times {\mathrm{1091}}^1\times {\mathrm{37589}}^1$

素因数の和:38691

約数の個数: 32

約数和(自身を含む): 3694345200

約数和(自身を除く): 2053961240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1091, 2182, 4364, 5455, 8728, 10910, 21820, 37589, 43640, 75178, 150356, 187945, 300712, 375890, 751780, 1503560, 41009599, 82019198, 164038396, 205047995, 328076792, 410095990, 820191980, 1640383960]

約数ペア:

[(1, 1640383960), (2, 820191980), (4, 410095990), (5, 328076792), (8, 205047995), (10, 164038396), (20, 82019198), (40, 41009599), (1091, 1503560), (2182, 751780), (4364, 375890), (5455, 300712), (8728, 187945), (10910, 150356), (21820, 75178), (37589, 43640)]