18888700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 44622144

約数和(自身を除く): 25733444

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 41, 50, 68, 82, 85, 100, 164, 170, 205, 271, 340, 410, 425, 542, 697, 820, 850, 1025, 1084, 1355, 1394, 1700, 2050, 2710, 2788, 3485, 4100, 4607, 5420, 6775, 6970, 9214, 11111, 13550, 13940, 17425, 18428, 22222, 23035, 27100, 34850, 44444, 46070, 55555, 69700, 92140, 111110, 115175, 188887, 222220, 230350, 277775, 377774, 460700, 555550, 755548, 944435, 1111100, 1888870, 3777740, 4722175, 9444350, 18888700]

約数ペア:

[(1, 18888700), (2, 9444350), (4, 4722175), (5, 3777740), (10, 1888870), (17, 1111100), (20, 944435), (25, 755548), (34, 555550), (41, 460700), (50, 377774), (68, 277775), (82, 230350), (85, 222220), (100, 188887), (164, 115175), (170, 111110), (205, 92140), (271, 69700), (340, 55555), (410, 46070), (425, 44444), (542, 34850), (697, 27100), (820, 23035), (850, 22222), (1025, 18428), (1084, 17425), (1355, 13940), (1394, 13550), (1700, 11111), (2050, 9214), (2710, 6970), (2788, 6775), (3485, 5420), (4100, 4607)]