1649728240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{665213}}^1$

素因数の和:665257

約数の個数: 40

約数和(自身を含む): 3959353728

約数和(自身を除く): 2309625488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 665213, 1330426, 2660852, 3326065, 5321704, 6652130, 10643408, 13304260, 20621603, 26608520, 41243206, 53217040, 82486412, 103108015, 164972824, 206216030, 329945648, 412432060, 824864120, 1649728240]

約数ペア:

[(1, 1649728240), (2, 824864120), (4, 412432060), (5, 329945648), (8, 206216030), (10, 164972824), (16, 103108015), (20, 82486412), (31, 53217040), (40, 41243206), (62, 26608520), (80, 20621603), (124, 13304260), (155, 10643408), (248, 6652130), (310, 5321704), (496, 3326065), (620, 2660852), (1240, 1330426), (2480, 665213)]