654323900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{661}}^1$

素因数の和:1215

約数の個数: 72

約数和(自身を含む): 1499747760

約数和(自身を除く): 845423860

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 521, 661, 950, 1042, 1322, 1900, 2084, 2605, 2644, 3305, 5210, 6610, 9899, 10420, 12559, 13025, 13220, 16525, 19798, 25118, 26050, 33050, 39596, 49495, 50236, 52100, 62795, 66100, 98990, 125590, 197980, 247475, 251180, 313975, 344381, 494950, 627950, 688762, 989900, 1255900, 1377524, 1721905, 3443810, 6543239, 6887620, 8609525, 13086478, 17219050, 26172956, 32716195, 34438100, 65432390, 130864780, 163580975, 327161950, 654323900]

約数ペア:

[(1, 654323900), (2, 327161950), (4, 163580975), (5, 130864780), (10, 65432390), (19, 34438100), (20, 32716195), (25, 26172956), (38, 17219050), (50, 13086478), (76, 8609525), (95, 6887620), (100, 6543239), (190, 3443810), (380, 1721905), (475, 1377524), (521, 1255900), (661, 989900), (950, 688762), (1042, 627950), (1322, 494950), (1900, 344381), (2084, 313975), (2605, 251180), (2644, 247475), (3305, 197980), (5210, 125590), (6610, 98990), (9899, 66100), (10420, 62795), (12559, 52100), (13025, 50236), (13220, 49495), (16525, 39596), (19798, 33050), (25118, 26050)]