128591281

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{823}}^1$

素因数の和:961

約数の個数: 32

約数和(自身を含む): 169440768

約数和(自身を除く): 40849487

約数列:

[1, 7, 13, 17, 91, 101, 119, 221, 707, 823, 1313, 1547, 1717, 5761, 9191, 10699, 12019, 13991, 22321, 74893, 83123, 97937, 156247, 181883, 581861, 1080599, 1273181, 1413091, 7564193, 9891637, 18370183, 128591281]

約数ペア:

[(1, 128591281), (7, 18370183), (13, 9891637), (17, 7564193), (91, 1413091), (101, 1273181), (119, 1080599), (221, 581861), (707, 181883), (823, 156247), (1313, 97937), (1547, 83123), (1717, 74893), (5761, 22321), (9191, 13991), (10699, 12019)]