18992925

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 40235520

約数和(自身を除く): 21242595

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 31, 35, 45, 63, 75, 93, 105, 155, 175, 217, 225, 279, 315, 389, 465, 525, 651, 775, 1085, 1167, 1395, 1575, 1945, 1953, 2325, 2723, 3255, 3501, 5425, 5835, 6975, 8169, 9725, 9765, 12059, 13615, 16275, 17505, 24507, 29175, 36177, 40845, 48825, 60295, 68075, 84413, 87525, 108531, 122535, 180885, 204225, 253239, 301475, 422065, 542655, 612675, 759717, 904425, 1266195, 2110325, 2713275, 3798585, 6330975, 18992925]

約数ペア:

[(1, 18992925), (3, 6330975), (5, 3798585), (7, 2713275), (9, 2110325), (15, 1266195), (21, 904425), (25, 759717), (31, 612675), (35, 542655), (45, 422065), (63, 301475), (75, 253239), (93, 204225), (105, 180885), (155, 122535), (175, 108531), (217, 87525), (225, 84413), (279, 68075), (315, 60295), (389, 48825), (465, 40845), (525, 36177), (651, 29175), (775, 24507), (1085, 17505), (1167, 16275), (1395, 13615), (1575, 12059), (1945, 9765), (1953, 9725), (2325, 8169), (2723, 6975), (3255, 5835), (3501, 5425)]