81989010

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{101221}}^1$

素因数の和:101240

約数の個数: 40

約数和(自身を含む): 220461516

約数和(自身を除く): 138472506

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 101221, 202442, 303663, 506105, 607326, 910989, 1012210, 1518315, 1821978, 2732967, 3036630, 4554945, 5465934, 8198901, 9109890, 13664835, 16397802, 27329670, 40994505, 81989010]

約数ペア:

[(1, 81989010), (2, 40994505), (3, 27329670), (5, 16397802), (6, 13664835), (9, 9109890), (10, 8198901), (15, 5465934), (18, 4554945), (27, 3036630), (30, 2732967), (45, 1821978), (54, 1518315), (81, 1012210), (90, 910989), (135, 607326), (162, 506105), (270, 303663), (405, 202442), (810, 101221)]