19425825

素因数分解:

$3^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:256

約数の個数: 60

約数和(自身を含む): 36864828

約数和(自身を除く): 17439003

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 53, 75, 81, 135, 159, 181, 225, 265, 405, 477, 543, 675, 795, 905, 1325, 1431, 1629, 2025, 2385, 2715, 3975, 4293, 4525, 4887, 7155, 8145, 9593, 11925, 13575, 14661, 21465, 24435, 28779, 35775, 40725, 47965, 73305, 86337, 107325, 122175, 143895, 239825, 259011, 366525, 431685, 719475, 777033, 1295055, 2158425, 3885165, 6475275, 19425825]

約数ペア:

[(1, 19425825), (3, 6475275), (5, 3885165), (9, 2158425), (15, 1295055), (25, 777033), (27, 719475), (45, 431685), (53, 366525), (75, 259011), (81, 239825), (135, 143895), (159, 122175), (181, 107325), (225, 86337), (265, 73305), (405, 47965), (477, 40725), (543, 35775), (675, 28779), (795, 24435), (905, 21465), (1325, 14661), (1431, 13575), (1629, 11925), (2025, 9593), (2385, 8145), (2715, 7155), (3975, 4887), (4293, 4525)]