78717440

素因数分解:

$2^9\times 5^1\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:437

約数の個数: 80

約数和(自身を含む): 191284632

約数和(自身を除く): 112567192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 256, 317, 320, 388, 485, 512, 634, 640, 776, 970, 1268, 1280, 1552, 1585, 1940, 2536, 2560, 3104, 3170, 3880, 5072, 6208, 6340, 7760, 10144, 12416, 12680, 15520, 20288, 24832, 25360, 30749, 31040, 40576, 49664, 50720, 61498, 62080, 81152, 101440, 122996, 124160, 153745, 162304, 202880, 245992, 248320, 307490, 405760, 491984, 614980, 811520, 983968, 1229960, 1967936, 2459920, 3935872, 4919840, 7871744, 9839680, 15743488, 19679360, 39358720, 78717440]

約数ペア:

[(1, 78717440), (2, 39358720), (4, 19679360), (5, 15743488), (8, 9839680), (10, 7871744), (16, 4919840), (20, 3935872), (32, 2459920), (40, 1967936), (64, 1229960), (80, 983968), (97, 811520), (128, 614980), (160, 491984), (194, 405760), (256, 307490), (317, 248320), (320, 245992), (388, 202880), (485, 162304), (512, 153745), (634, 124160), (640, 122996), (776, 101440), (970, 81152), (1268, 62080), (1280, 61498), (1552, 50720), (1585, 49664), (1940, 40576), (2536, 31040), (2560, 30749), (3104, 25360), (3170, 24832), (3880, 20288), (5072, 15520), (6208, 12680), (6340, 12416), (7760, 10144)]