215225745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{7243}}^1$

素因数の和:7541

約数の個数: 32

約数和(自身を含む): 395000832

約数和(自身を除く): 179775087

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 283, 849, 1415, 1981, 4245, 5943, 7243, 9905, 21729, 29715, 36215, 50701, 108645, 152103, 253505, 760515, 2049769, 6149307, 10248845, 14348383, 30746535, 43045149, 71741915, 215225745]

約数ペア:

[(1, 215225745), (3, 71741915), (5, 43045149), (7, 30746535), (15, 14348383), (21, 10248845), (35, 6149307), (105, 2049769), (283, 760515), (849, 253505), (1415, 152103), (1981, 108645), (4245, 50701), (5943, 36215), (7243, 29715), (9905, 21729)]