1399454720

素因数分解:

$2^{10}\times 5^1\times {\mathrm{443}}^1\times {\mathrm{617}}^1$

素因数の和:1085

約数の個数: 88

約数和(自身を含む): 3370082544

約数和(自身を除く): 1970627824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 443, 512, 617, 640, 886, 1024, 1234, 1280, 1772, 2215, 2468, 2560, 3085, 3544, 4430, 4936, 5120, 6170, 7088, 8860, 9872, 12340, 14176, 17720, 19744, 24680, 28352, 35440, 39488, 49360, 56704, 70880, 78976, 98720, 113408, 141760, 157952, 197440, 226816, 273331, 283520, 315904, 394880, 453632, 546662, 567040, 631808, 789760, 1093324, 1134080, 1366655, 1579520, 2186648, 2268160, 2733310, 3159040, 4373296, 5466620, 8746592, 10933240, 17493184, 21866480, 34986368, 43732960, 69972736, 87465920, 139945472, 174931840, 279890944, 349863680, 699727360, 1399454720]

約数ペア:

[(1, 1399454720), (2, 699727360), (4, 349863680), (5, 279890944), (8, 174931840), (10, 139945472), (16, 87465920), (20, 69972736), (32, 43732960), (40, 34986368), (64, 21866480), (80, 17493184), (128, 10933240), (160, 8746592), (256, 5466620), (320, 4373296), (443, 3159040), (512, 2733310), (617, 2268160), (640, 2186648), (886, 1579520), (1024, 1366655), (1234, 1134080), (1280, 1093324), (1772, 789760), (2215, 631808), (2468, 567040), (2560, 546662), (3085, 453632), (3544, 394880), (4430, 315904), (4936, 283520), (5120, 273331), (6170, 226816), (7088, 197440), (8860, 157952), (9872, 141760), (12340, 113408), (14176, 98720), (17720, 78976), (19744, 70880), (24680, 56704), (28352, 49360), (35440, 39488)]