198347920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79979}}^1$

素因数の和:80023

約数の個数: 40

約数和(自身を含む): 476040960

約数和(自身を除く): 277693040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 79979, 159958, 319916, 399895, 639832, 799790, 1279664, 1599580, 2479349, 3199160, 4958698, 6398320, 9917396, 12396745, 19834792, 24793490, 39669584, 49586980, 99173960, 198347920]

約数ペア:

[(1, 198347920), (2, 99173960), (4, 49586980), (5, 39669584), (8, 24793490), (10, 19834792), (16, 12396745), (20, 9917396), (31, 6398320), (40, 4958698), (62, 3199160), (80, 2479349), (124, 1599580), (155, 1279664), (248, 799790), (310, 639832), (496, 399895), (620, 319916), (1240, 159958), (2480, 79979)]