638049100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{28871}}^1$

素因数の和:28915

約数の個数: 72

約数和(自身を含む): 1578836448

約数和(自身を除く): 940787348

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 130, 170, 221, 260, 325, 340, 425, 442, 650, 850, 884, 1105, 1300, 1700, 2210, 4420, 5525, 11050, 22100, 28871, 57742, 115484, 144355, 288710, 375323, 490807, 577420, 721775, 750646, 981614, 1443550, 1501292, 1876615, 1963228, 2454035, 2887100, 3753230, 4908070, 6380491, 7506460, 9383075, 9816140, 12270175, 12760982, 18766150, 24540350, 25521964, 31902455, 37532300, 49080700, 63804910, 127609820, 159512275, 319024550, 638049100]

約数ペア:

[(1, 638049100), (2, 319024550), (4, 159512275), (5, 127609820), (10, 63804910), (13, 49080700), (17, 37532300), (20, 31902455), (25, 25521964), (26, 24540350), (34, 18766150), (50, 12760982), (52, 12270175), (65, 9816140), (68, 9383075), (85, 7506460), (100, 6380491), (130, 4908070), (170, 3753230), (221, 2887100), (260, 2454035), (325, 1963228), (340, 1876615), (425, 1501292), (442, 1443550), (650, 981614), (850, 750646), (884, 721775), (1105, 577420), (1300, 490807), (1700, 375323), (2210, 288710), (4420, 144355), (5525, 115484), (11050, 57742), (22100, 28871)]