519889940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{4001}}^1$

素因数の和:4172

約数の個数: 48

約数和(自身を含む): 1119439440

約数和(自身を除く): 599549500

約数列:

[1, 2, 4, 5, 10, 20, 73, 89, 146, 178, 292, 356, 365, 445, 730, 890, 1460, 1780, 4001, 6497, 8002, 12994, 16004, 20005, 25988, 32485, 40010, 64970, 80020, 129940, 292073, 356089, 584146, 712178, 1168292, 1424356, 1460365, 1780445, 2920730, 3560890, 5841460, 7121780, 25994497, 51988994, 103977988, 129972485, 259944970, 519889940]

約数ペア:

[(1, 519889940), (2, 259944970), (4, 129972485), (5, 103977988), (10, 51988994), (20, 25994497), (73, 7121780), (89, 5841460), (146, 3560890), (178, 2920730), (292, 1780445), (356, 1460365), (365, 1424356), (445, 1168292), (730, 712178), (890, 584146), (1460, 356089), (1780, 292073), (4001, 129940), (6497, 80020), (8002, 64970), (12994, 40010), (16004, 32485), (20005, 25988)]