28404920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:608

約数の個数: 64

約数和(自身を含む): 67651200

約数和(自身を除く): 39246280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 47, 58, 94, 116, 145, 188, 232, 235, 290, 376, 470, 521, 580, 940, 1042, 1160, 1363, 1880, 2084, 2605, 2726, 4168, 5210, 5452, 6815, 10420, 10904, 13630, 15109, 20840, 24487, 27260, 30218, 48974, 54520, 60436, 75545, 97948, 120872, 122435, 151090, 195896, 244870, 302180, 489740, 604360, 710123, 979480, 1420246, 2840492, 3550615, 5680984, 7101230, 14202460, 28404920]

約数ペア:

[(1, 28404920), (2, 14202460), (4, 7101230), (5, 5680984), (8, 3550615), (10, 2840492), (20, 1420246), (29, 979480), (40, 710123), (47, 604360), (58, 489740), (94, 302180), (116, 244870), (145, 195896), (188, 151090), (232, 122435), (235, 120872), (290, 97948), (376, 75545), (470, 60436), (521, 54520), (580, 48974), (940, 30218), (1042, 27260), (1160, 24487), (1363, 20840), (1880, 15109), (2084, 13630), (2605, 10904), (2726, 10420), (4168, 6815), (5210, 5452)]