21874700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 51819600

約数和(自身を除く): 29944900

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 29, 38, 50, 58, 76, 95, 100, 116, 145, 190, 290, 380, 397, 475, 551, 580, 725, 794, 950, 1102, 1450, 1588, 1900, 1985, 2204, 2755, 2900, 3970, 5510, 7543, 7940, 9925, 11020, 11513, 13775, 15086, 19850, 23026, 27550, 30172, 37715, 39700, 46052, 55100, 57565, 75430, 115130, 150860, 188575, 218747, 230260, 287825, 377150, 437494, 575650, 754300, 874988, 1093735, 1151300, 2187470, 4374940, 5468675, 10937350, 21874700]

約数ペア:

[(1, 21874700), (2, 10937350), (4, 5468675), (5, 4374940), (10, 2187470), (19, 1151300), (20, 1093735), (25, 874988), (29, 754300), (38, 575650), (50, 437494), (58, 377150), (76, 287825), (95, 230260), (100, 218747), (116, 188575), (145, 150860), (190, 115130), (290, 75430), (380, 57565), (397, 55100), (475, 46052), (551, 39700), (580, 37715), (725, 30172), (794, 27550), (950, 23026), (1102, 19850), (1450, 15086), (1588, 13775), (1900, 11513), (1985, 11020), (2204, 9925), (2755, 7940), (2900, 7543), (3970, 5510)]