78511780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^2$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 181589688

約数和(自身を除く): 103077908

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 79, 85, 148, 158, 170, 185, 316, 340, 370, 395, 629, 740, 790, 1258, 1343, 1580, 2516, 2686, 2923, 3145, 5372, 5846, 6241, 6290, 6715, 11692, 12482, 12580, 13430, 14615, 24964, 26860, 29230, 31205, 49691, 58460, 62410, 99382, 106097, 124820, 198764, 212194, 230917, 248455, 424388, 461834, 496910, 530485, 923668, 993820, 1060970, 1154585, 2121940, 2309170, 3925589, 4618340, 7851178, 15702356, 19627945, 39255890, 78511780]

約数ペア:

[(1, 78511780), (2, 39255890), (4, 19627945), (5, 15702356), (10, 7851178), (17, 4618340), (20, 3925589), (34, 2309170), (37, 2121940), (68, 1154585), (74, 1060970), (79, 993820), (85, 923668), (148, 530485), (158, 496910), (170, 461834), (185, 424388), (316, 248455), (340, 230917), (370, 212194), (395, 198764), (629, 124820), (740, 106097), (790, 99382), (1258, 62410), (1343, 58460), (1580, 49691), (2516, 31205), (2686, 29230), (2923, 26860), (3145, 24964), (5372, 14615), (5846, 13430), (6241, 12580), (6290, 12482), (6715, 11692)]