21325310

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 41909184

約数和(自身を除く): 20583874

約数列:

[1, 2, 5, 10, 17, 34, 47, 85, 94, 157, 170, 235, 289, 314, 470, 578, 785, 799, 1445, 1570, 1598, 2669, 2890, 3995, 5338, 7379, 7990, 13345, 13583, 14758, 26690, 27166, 36895, 45373, 67915, 73790, 90746, 125443, 135830, 226865, 250886, 453730, 627215, 1254430, 2132531, 4265062, 10662655, 21325310]

約数ペア:

[(1, 21325310), (2, 10662655), (5, 4265062), (10, 2132531), (17, 1254430), (34, 627215), (47, 453730), (85, 250886), (94, 226865), (157, 135830), (170, 125443), (235, 90746), (289, 73790), (314, 67915), (470, 45373), (578, 36895), (785, 27166), (799, 26690), (1445, 14758), (1570, 13583), (1598, 13345), (2669, 7990), (2890, 7379), (3995, 5338)]