81774100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{223}}^1$

素因数の和:449

約数の個数: 72

約数和(自身を含む): 188599040

約数和(自身を除く): 106824940

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 193, 223, 380, 386, 446, 475, 772, 892, 950, 965, 1115, 1900, 1930, 2230, 3667, 3860, 4237, 4460, 4825, 5575, 7334, 8474, 9650, 11150, 14668, 16948, 18335, 19300, 21185, 22300, 36670, 42370, 43039, 73340, 84740, 86078, 91675, 105925, 172156, 183350, 211850, 215195, 366700, 423700, 430390, 817741, 860780, 1075975, 1635482, 2151950, 3270964, 4088705, 4303900, 8177410, 16354820, 20443525, 40887050, 81774100]

約数ペア:

[(1, 81774100), (2, 40887050), (4, 20443525), (5, 16354820), (10, 8177410), (19, 4303900), (20, 4088705), (25, 3270964), (38, 2151950), (50, 1635482), (76, 1075975), (95, 860780), (100, 817741), (190, 430390), (193, 423700), (223, 366700), (380, 215195), (386, 211850), (446, 183350), (475, 172156), (772, 105925), (892, 91675), (950, 86078), (965, 84740), (1115, 73340), (1900, 43039), (1930, 42370), (2230, 36670), (3667, 22300), (3860, 21185), (4237, 19300), (4460, 18335), (4825, 16948), (5575, 14668), (7334, 11150), (8474, 9650)]