199917440

素因数分解:

$2^7\times 5^1\times {\mathrm{312371}}^1$

素因数の和:312390

約数の個数: 32

約数和(自身を含む): 477929160

約数和(自身を除く): 278011720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 312371, 624742, 1249484, 1561855, 2498968, 3123710, 4997936, 6247420, 9995872, 12494840, 19991744, 24989680, 39983488, 49979360, 99958720, 199917440]

約数ペア:

[(1, 199917440), (2, 99958720), (4, 49979360), (5, 39983488), (8, 24989680), (10, 19991744), (16, 12494840), (20, 9995872), (32, 6247420), (40, 4997936), (64, 3123710), (80, 2498968), (128, 1561855), (160, 1249484), (320, 624742), (640, 312371)]