256729600

素因数分解:

$2^9\times 5^2\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:706

約数の個数: 120

約数和(自身を含む): 657600768

約数和(自身を除く): 400871168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 200, 248, 256, 310, 320, 400, 496, 512, 620, 640, 647, 775, 800, 992, 1240, 1280, 1294, 1550, 1600, 1984, 2480, 2560, 2588, 3100, 3200, 3235, 3968, 4960, 5176, 6200, 6400, 6470, 7936, 9920, 10352, 12400, 12800, 12940, 15872, 16175, 19840, 20057, 20704, 24800, 25880, 32350, 39680, 40114, 41408, 49600, 51760, 64700, 79360, 80228, 82816, 99200, 100285, 103520, 129400, 160456, 165632, 198400, 200570, 207040, 258800, 320912, 331264, 396800, 401140, 414080, 501425, 517600, 641824, 802280, 828160, 1002850, 1035200, 1283648, 1604560, 1656320, 2005700, 2070400, 2567296, 3209120, 4011400, 4140800, 5134592, 6418240, 8022800, 8281600, 10269184, 12836480, 16045600, 25672960, 32091200, 51345920, 64182400, 128364800, 256729600]

約数ペア:

[(1, 256729600), (2, 128364800), (4, 64182400), (5, 51345920), (8, 32091200), (10, 25672960), (16, 16045600), (20, 12836480), (25, 10269184), (31, 8281600), (32, 8022800), (40, 6418240), (50, 5134592), (62, 4140800), (64, 4011400), (80, 3209120), (100, 2567296), (124, 2070400), (128, 2005700), (155, 1656320), (160, 1604560), (200, 1283648), (248, 1035200), (256, 1002850), (310, 828160), (320, 802280), (400, 641824), (496, 517600), (512, 501425), (620, 414080), (640, 401140), (647, 396800), (775, 331264), (800, 320912), (992, 258800), (1240, 207040), (1280, 200570), (1294, 198400), (1550, 165632), (1600, 160456), (1984, 129400), (2480, 103520), (2560, 100285), (2588, 99200), (3100, 82816), (3200, 80228), (3235, 79360), (3968, 64700), (4960, 51760), (5176, 49600), (6200, 41408), (6400, 40114), (6470, 39680), (7936, 32350), (9920, 25880), (10352, 24800), (12400, 20704), (12800, 20057), (12940, 19840), (15872, 16175)]