51138400

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:776

約数の個数: 72

約数和(自身を含む): 126320040

約数和(自身を除く): 75181640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 160, 194, 200, 388, 400, 485, 659, 776, 800, 970, 1318, 1552, 1940, 2425, 2636, 3104, 3295, 3880, 4850, 5272, 6590, 7760, 9700, 10544, 13180, 15520, 16475, 19400, 21088, 26360, 32950, 38800, 52720, 63923, 65900, 77600, 105440, 127846, 131800, 255692, 263600, 319615, 511384, 527200, 639230, 1022768, 1278460, 1598075, 2045536, 2556920, 3196150, 5113840, 6392300, 10227680, 12784600, 25569200, 51138400]

約数ペア:

[(1, 51138400), (2, 25569200), (4, 12784600), (5, 10227680), (8, 6392300), (10, 5113840), (16, 3196150), (20, 2556920), (25, 2045536), (32, 1598075), (40, 1278460), (50, 1022768), (80, 639230), (97, 527200), (100, 511384), (160, 319615), (194, 263600), (200, 255692), (388, 131800), (400, 127846), (485, 105440), (659, 77600), (776, 65900), (800, 63923), (970, 52720), (1318, 38800), (1552, 32950), (1940, 26360), (2425, 21088), (2636, 19400), (3104, 16475), (3295, 15520), (3880, 13180), (4850, 10544), (5272, 9700), (6590, 7760)]