18420800

素因数分解:

$2^6\times 5^2\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 84

約数和(自身を含む): 47007780

約数和(自身を除く): 28586980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 50, 58, 64, 80, 100, 116, 145, 160, 200, 232, 290, 320, 397, 400, 464, 580, 725, 794, 800, 928, 1160, 1450, 1588, 1600, 1856, 1985, 2320, 2900, 3176, 3970, 4640, 5800, 6352, 7940, 9280, 9925, 11513, 11600, 12704, 15880, 19850, 23026, 23200, 25408, 31760, 39700, 46052, 46400, 57565, 63520, 79400, 92104, 115130, 127040, 158800, 184208, 230260, 287825, 317600, 368416, 460520, 575650, 635200, 736832, 921040, 1151300, 1842080, 2302600, 3684160, 4605200, 9210400, 18420800]

約数ペア:

[(1, 18420800), (2, 9210400), (4, 4605200), (5, 3684160), (8, 2302600), (10, 1842080), (16, 1151300), (20, 921040), (25, 736832), (29, 635200), (32, 575650), (40, 460520), (50, 368416), (58, 317600), (64, 287825), (80, 230260), (100, 184208), (116, 158800), (145, 127040), (160, 115130), (200, 92104), (232, 79400), (290, 63520), (320, 57565), (397, 46400), (400, 46052), (464, 39700), (580, 31760), (725, 25408), (794, 23200), (800, 23026), (928, 19850), (1160, 15880), (1450, 12704), (1588, 11600), (1600, 11513), (1856, 9925), (1985, 9280), (2320, 7940), (2900, 6352), (3176, 5800), (3970, 4640)]