720756560

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1\times {\mathrm{317}}^1$

素因数の和:720

約数の個数: 80

約数和(自身を含む): 1704172176

約数和(自身を除く): 983415616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 293, 317, 388, 485, 586, 634, 776, 970, 1172, 1268, 1465, 1552, 1585, 1940, 2344, 2536, 2930, 3170, 3880, 4688, 5072, 5860, 6340, 7760, 11720, 12680, 23440, 25360, 28421, 30749, 56842, 61498, 92881, 113684, 122996, 142105, 153745, 185762, 227368, 245992, 284210, 307490, 371524, 454736, 464405, 491984, 568420, 614980, 743048, 928810, 1136840, 1229960, 1486096, 1857620, 2273680, 2459920, 3715240, 7430480, 9009457, 18018914, 36037828, 45047285, 72075656, 90094570, 144151312, 180189140, 360378280, 720756560]

約数ペア:

[(1, 720756560), (2, 360378280), (4, 180189140), (5, 144151312), (8, 90094570), (10, 72075656), (16, 45047285), (20, 36037828), (40, 18018914), (80, 9009457), (97, 7430480), (194, 3715240), (293, 2459920), (317, 2273680), (388, 1857620), (485, 1486096), (586, 1229960), (634, 1136840), (776, 928810), (970, 743048), (1172, 614980), (1268, 568420), (1465, 491984), (1552, 464405), (1585, 454736), (1940, 371524), (2344, 307490), (2536, 284210), (2930, 245992), (3170, 227368), (3880, 185762), (4688, 153745), (5072, 142105), (5860, 122996), (6340, 113684), (7760, 92881), (11720, 61498), (12680, 56842), (23440, 30749), (25360, 28421)]