21228800

素因数分解:

$2^8\times 5^2\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:164

約数の個数: 108

約数和(自身を含む): 54746496

約数和(自身を除く): 33517696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 107, 124, 128, 155, 160, 200, 214, 248, 256, 310, 320, 400, 428, 496, 535, 620, 640, 775, 800, 856, 992, 1070, 1240, 1280, 1550, 1600, 1712, 1984, 2140, 2480, 2675, 3100, 3200, 3317, 3424, 3968, 4280, 4960, 5350, 6200, 6400, 6634, 6848, 7936, 8560, 9920, 10700, 12400, 13268, 13696, 16585, 17120, 19840, 21400, 24800, 26536, 27392, 33170, 34240, 39680, 42800, 49600, 53072, 66340, 68480, 82925, 85600, 99200, 106144, 132680, 136960, 165850, 171200, 198400, 212288, 265360, 331700, 342400, 424576, 530720, 663400, 684800, 849152, 1061440, 1326800, 2122880, 2653600, 4245760, 5307200, 10614400, 21228800]

約数ペア:

[(1, 21228800), (2, 10614400), (4, 5307200), (5, 4245760), (8, 2653600), (10, 2122880), (16, 1326800), (20, 1061440), (25, 849152), (31, 684800), (32, 663400), (40, 530720), (50, 424576), (62, 342400), (64, 331700), (80, 265360), (100, 212288), (107, 198400), (124, 171200), (128, 165850), (155, 136960), (160, 132680), (200, 106144), (214, 99200), (248, 85600), (256, 82925), (310, 68480), (320, 66340), (400, 53072), (428, 49600), (496, 42800), (535, 39680), (620, 34240), (640, 33170), (775, 27392), (800, 26536), (856, 24800), (992, 21400), (1070, 19840), (1240, 17120), (1280, 16585), (1550, 13696), (1600, 13268), (1712, 12400), (1984, 10700), (2140, 9920), (2480, 8560), (2675, 7936), (3100, 6848), (3200, 6634), (3317, 6400), (3424, 6200), (3968, 5350), (4280, 4960)]