20157085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 27659520

約数和(自身を除く): 7502435

約数列:

[1, 5, 13, 23, 65, 97, 115, 139, 299, 485, 695, 1261, 1495, 1807, 2231, 3197, 6305, 9035, 11155, 13483, 15985, 29003, 41561, 67415, 145015, 175279, 207805, 310109, 876395, 1550545, 4031417, 20157085]

約数ペア:

[(1, 20157085), (5, 4031417), (13, 1550545), (23, 876395), (65, 310109), (97, 207805), (115, 175279), (139, 145015), (299, 67415), (485, 41561), (695, 29003), (1261, 15985), (1495, 13483), (1807, 11155), (2231, 9035), (3197, 6305)]