129688960

素因数分解:

$2^7\times 5^1\times {\mathrm{202639}}^1$

素因数の和:202658

約数の個数: 32

約数和(自身を含む): 310039200

約数和(自身を除く): 180350240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 202639, 405278, 810556, 1013195, 1621112, 2026390, 3242224, 4052780, 6484448, 8105560, 12968896, 16211120, 25937792, 32422240, 64844480, 129688960]

約数ペア:

[(1, 129688960), (2, 64844480), (4, 32422240), (5, 25937792), (8, 16211120), (10, 12968896), (16, 8105560), (20, 6484448), (32, 4052780), (40, 3242224), (64, 2026390), (80, 1621112), (128, 1013195), (160, 810556), (320, 405278), (640, 202639)]