215550905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{457}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 284912640

約数和(自身を除く): 69361735

約数列:

[1, 5, 17, 31, 85, 155, 179, 457, 527, 895, 2285, 2635, 3043, 5549, 7769, 14167, 15215, 27745, 38845, 70835, 81803, 94333, 240839, 409015, 471665, 1204195, 1390651, 2535893, 6953255, 12679465, 43110181, 215550905]

約数ペア:

[(1, 215550905), (5, 43110181), (17, 12679465), (31, 6953255), (85, 2535893), (155, 1390651), (179, 1204195), (457, 471665), (527, 409015), (895, 240839), (2285, 94333), (2635, 81803), (3043, 70835), (5549, 38845), (7769, 27745), (14167, 15215)]