491812820080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{198311621}}^1$

素因数の和:198311665

約数の個数: 40

約数和(自身を含む): 1180350774144

約数和(自身を除く): 688537954064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 198311621, 396623242, 793246484, 991558105, 1586492968, 1983116210, 3172985936, 3966232420, 6147660251, 7932464840, 12295320502, 15864929680, 24590641004, 30738301255, 49181282008, 61476602510, 98362564016, 122953205020, 245906410040, 491812820080]

約数ペア:

[(1, 491812820080), (2, 245906410040), (4, 122953205020), (5, 98362564016), (8, 61476602510), (10, 49181282008), (16, 30738301255), (20, 24590641004), (31, 15864929680), (40, 12295320502), (62, 7932464840), (80, 6147660251), (124, 3966232420), (155, 3172985936), (248, 1983116210), (310, 1586492968), (496, 991558105), (620, 793246484), (1240, 396623242), (2480, 198311621)]