20889040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8423}}^1$

素因数の和:8467

約数の個数: 40

約数和(自身を含む): 50139648

約数和(自身を除く): 29250608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8423, 16846, 33692, 42115, 67384, 84230, 134768, 168460, 261113, 336920, 522226, 673840, 1044452, 1305565, 2088904, 2611130, 4177808, 5222260, 10444520, 20889040]

約数ペア:

[(1, 20889040), (2, 10444520), (4, 5222260), (5, 4177808), (8, 2611130), (10, 2088904), (16, 1305565), (20, 1044452), (31, 673840), (40, 522226), (62, 336920), (80, 261113), (124, 168460), (155, 134768), (248, 84230), (310, 67384), (496, 42115), (620, 33692), (1240, 16846), (2480, 8423)]