90108109

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 122553648

約数和(自身を除く): 32445539

約数列:

[1, 7, 13, 17, 49, 53, 91, 119, 157, 221, 371, 637, 689, 833, 901, 1099, 1547, 2041, 2597, 2669, 4823, 6307, 7693, 8321, 10829, 11713, 14287, 18683, 33761, 34697, 44149, 58247, 81991, 100009, 108173, 130781, 141457, 242879, 407729, 573937, 757211, 990199, 1700153, 1838941, 5300477, 6931393, 12872587, 90108109]

約数ペア:

[(1, 90108109), (7, 12872587), (13, 6931393), (17, 5300477), (49, 1838941), (53, 1700153), (91, 990199), (119, 757211), (157, 573937), (221, 407729), (371, 242879), (637, 141457), (689, 130781), (833, 108173), (901, 100009), (1099, 81991), (1547, 58247), (2041, 44149), (2597, 34697), (2669, 33761), (4823, 18683), (6307, 14287), (7693, 11713), (8321, 10829)]