21478800

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{2557}}^1$

素因数の和:2585

約数の個数: 120

約数和(自身を含む): 78663616

約数和(自身を除く): 57184816

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 100, 105, 112, 120, 140, 150, 168, 175, 200, 210, 240, 280, 300, 336, 350, 400, 420, 525, 560, 600, 700, 840, 1050, 1200, 1400, 1680, 2100, 2557, 2800, 4200, 5114, 7671, 8400, 10228, 12785, 15342, 17899, 20456, 25570, 30684, 35798, 38355, 40912, 51140, 53697, 61368, 63925, 71596, 76710, 89495, 102280, 107394, 122736, 127850, 143192, 153420, 178990, 191775, 204560, 214788, 255700, 268485, 286384, 306840, 357980, 383550, 429576, 447475, 511400, 536970, 613680, 715960, 767100, 859152, 894950, 1022800, 1073940, 1342425, 1431920, 1534200, 1789900, 2147880, 2684850, 3068400, 3579800, 4295760, 5369700, 7159600, 10739400, 21478800]

約数ペア:

[(1, 21478800), (2, 10739400), (3, 7159600), (4, 5369700), (5, 4295760), (6, 3579800), (7, 3068400), (8, 2684850), (10, 2147880), (12, 1789900), (14, 1534200), (15, 1431920), (16, 1342425), (20, 1073940), (21, 1022800), (24, 894950), (25, 859152), (28, 767100), (30, 715960), (35, 613680), (40, 536970), (42, 511400), (48, 447475), (50, 429576), (56, 383550), (60, 357980), (70, 306840), (75, 286384), (80, 268485), (84, 255700), (100, 214788), (105, 204560), (112, 191775), (120, 178990), (140, 153420), (150, 143192), (168, 127850), (175, 122736), (200, 107394), (210, 102280), (240, 89495), (280, 76710), (300, 71596), (336, 63925), (350, 61368), (400, 53697), (420, 51140), (525, 40912), (560, 38355), (600, 35798), (700, 30684), (840, 25570), (1050, 20456), (1200, 17899), (1400, 15342), (1680, 12785), (2100, 10228), (2557, 8400), (2800, 7671), (4200, 5114)]