80178100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{2221}}^1$

素因数の和:2273

約数の個数: 54

約数和(自身を含む): 183708294

約数和(自身を除く): 103530194

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 361, 380, 475, 722, 950, 1444, 1805, 1900, 2221, 3610, 4442, 7220, 8884, 9025, 11105, 18050, 22210, 36100, 42199, 44420, 55525, 84398, 111050, 168796, 210995, 222100, 421990, 801781, 843980, 1054975, 1603562, 2109950, 3207124, 4008905, 4219900, 8017810, 16035620, 20044525, 40089050, 80178100]

約数ペア:

[(1, 80178100), (2, 40089050), (4, 20044525), (5, 16035620), (10, 8017810), (19, 4219900), (20, 4008905), (25, 3207124), (38, 2109950), (50, 1603562), (76, 1054975), (95, 843980), (100, 801781), (190, 421990), (361, 222100), (380, 210995), (475, 168796), (722, 111050), (950, 84398), (1444, 55525), (1805, 44420), (1900, 42199), (2221, 36100), (3610, 22210), (4442, 18050), (7220, 11105), (8884, 9025)]