820078400

素因数分解:

$2^6\times 5^2\times {\mathrm{71}}^1\times {\mathrm{7219}}^1$

素因数の和:7312

約数の個数: 84

約数和(自身を含む): 2046610080

約数和(自身を除く): 1226531680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 71, 80, 100, 142, 160, 200, 284, 320, 355, 400, 568, 710, 800, 1136, 1420, 1600, 1775, 2272, 2840, 3550, 4544, 5680, 7100, 7219, 11360, 14200, 14438, 22720, 28400, 28876, 36095, 56800, 57752, 72190, 113600, 115504, 144380, 180475, 231008, 288760, 360950, 462016, 512549, 577520, 721900, 1025098, 1155040, 1443800, 2050196, 2310080, 2562745, 2887600, 4100392, 5125490, 5775200, 8200784, 10250980, 11550400, 12813725, 16401568, 20501960, 25627450, 32803136, 41003920, 51254900, 82007840, 102509800, 164015680, 205019600, 410039200, 820078400]

約数ペア:

[(1, 820078400), (2, 410039200), (4, 205019600), (5, 164015680), (8, 102509800), (10, 82007840), (16, 51254900), (20, 41003920), (25, 32803136), (32, 25627450), (40, 20501960), (50, 16401568), (64, 12813725), (71, 11550400), (80, 10250980), (100, 8200784), (142, 5775200), (160, 5125490), (200, 4100392), (284, 2887600), (320, 2562745), (355, 2310080), (400, 2050196), (568, 1443800), (710, 1155040), (800, 1025098), (1136, 721900), (1420, 577520), (1600, 512549), (1775, 462016), (2272, 360950), (2840, 288760), (3550, 231008), (4544, 180475), (5680, 144380), (7100, 115504), (7219, 113600), (11360, 72190), (14200, 57752), (14438, 56800), (22720, 36095), (28400, 28876)]