897799100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{8081}}^1$

素因数の和:8207

約数の個数: 72

約数和(自身を含む): 2146643856

約数和(自身を除く): 1248844756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 101, 110, 202, 220, 275, 404, 505, 550, 1010, 1100, 1111, 2020, 2222, 2525, 4444, 5050, 5555, 8081, 10100, 11110, 16162, 22220, 27775, 32324, 40405, 55550, 80810, 88891, 111100, 161620, 177782, 202025, 355564, 404050, 444455, 808100, 816181, 888910, 1632362, 1777820, 2222275, 3264724, 4080905, 4444550, 8161810, 8889100, 8977991, 16323620, 17955982, 20404525, 35911964, 40809050, 44889955, 81618100, 89779910, 179559820, 224449775, 448899550, 897799100]

約数ペア:

[(1, 897799100), (2, 448899550), (4, 224449775), (5, 179559820), (10, 89779910), (11, 81618100), (20, 44889955), (22, 40809050), (25, 35911964), (44, 20404525), (50, 17955982), (55, 16323620), (100, 8977991), (101, 8889100), (110, 8161810), (202, 4444550), (220, 4080905), (275, 3264724), (404, 2222275), (505, 1777820), (550, 1632362), (1010, 888910), (1100, 816181), (1111, 808100), (2020, 444455), (2222, 404050), (2525, 355564), (4444, 202025), (5050, 177782), (5555, 161620), (8081, 111100), (10100, 88891), (11110, 80810), (16162, 55550), (22220, 40405), (27775, 32324)]