215678300

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:591

約数の個数: 72

約数和(自身を含む): 483510720

約数和(自身を除く): 267832420

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 109, 188, 218, 235, 421, 436, 470, 545, 842, 940, 1090, 1175, 1684, 2105, 2180, 2350, 2725, 4210, 4700, 5123, 5450, 8420, 10246, 10525, 10900, 19787, 20492, 21050, 25615, 39574, 42100, 45889, 51230, 79148, 91778, 98935, 102460, 128075, 183556, 197870, 229445, 256150, 395740, 458890, 494675, 512300, 917780, 989350, 1147225, 1978700, 2156783, 2294450, 4313566, 4588900, 8627132, 10783915, 21567830, 43135660, 53919575, 107839150, 215678300]

約数ペア:

[(1, 215678300), (2, 107839150), (4, 53919575), (5, 43135660), (10, 21567830), (20, 10783915), (25, 8627132), (47, 4588900), (50, 4313566), (94, 2294450), (100, 2156783), (109, 1978700), (188, 1147225), (218, 989350), (235, 917780), (421, 512300), (436, 494675), (470, 458890), (545, 395740), (842, 256150), (940, 229445), (1090, 197870), (1175, 183556), (1684, 128075), (2105, 102460), (2180, 98935), (2350, 91778), (2725, 79148), (4210, 51230), (4700, 45889), (5123, 42100), (5450, 39574), (8420, 25615), (10246, 21050), (10525, 20492), (10900, 19787)]