20215723100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{224869}}^1$

素因数の和:224943

約数の個数: 72

約数和(自身を含む): 46844918400

約数和(自身を除く): 26629195300

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 31, 50, 58, 62, 100, 116, 124, 145, 155, 290, 310, 580, 620, 725, 775, 899, 1450, 1550, 1798, 2900, 3100, 3596, 4495, 8990, 17980, 22475, 44950, 89900, 224869, 449738, 899476, 1124345, 2248690, 4497380, 5621725, 6521201, 6970939, 11243450, 13042402, 13941878, 22486900, 26084804, 27883756, 32606005, 34854695, 65212010, 69709390, 130424020, 139418780, 163030025, 174273475, 202157231, 326060050, 348546950, 404314462, 652120100, 697093900, 808628924, 1010786155, 2021572310, 4043144620, 5053930775, 10107861550, 20215723100]

約数ペア:

[(1, 20215723100), (2, 10107861550), (4, 5053930775), (5, 4043144620), (10, 2021572310), (20, 1010786155), (25, 808628924), (29, 697093900), (31, 652120100), (50, 404314462), (58, 348546950), (62, 326060050), (100, 202157231), (116, 174273475), (124, 163030025), (145, 139418780), (155, 130424020), (290, 69709390), (310, 65212010), (580, 34854695), (620, 32606005), (725, 27883756), (775, 26084804), (899, 22486900), (1450, 13941878), (1550, 13042402), (1798, 11243450), (2900, 6970939), (3100, 6521201), (3596, 5621725), (4495, 4497380), (8990, 2248690), (17980, 1124345), (22475, 899476), (44950, 449738), (89900, 224869)]