209218180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{2633}}^1$

素因数の和:2808

約数の個数: 48

約数和(自身を含む): 457999920

約数和(自身を除く): 248781740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 137, 145, 274, 290, 548, 580, 685, 1370, 2633, 2740, 3973, 5266, 7946, 10532, 13165, 15892, 19865, 26330, 39730, 52660, 76357, 79460, 152714, 305428, 360721, 381785, 721442, 763570, 1442884, 1527140, 1803605, 3607210, 7214420, 10460909, 20921818, 41843636, 52304545, 104609090, 209218180]

約数ペア:

[(1, 209218180), (2, 104609090), (4, 52304545), (5, 41843636), (10, 20921818), (20, 10460909), (29, 7214420), (58, 3607210), (116, 1803605), (137, 1527140), (145, 1442884), (274, 763570), (290, 721442), (548, 381785), (580, 360721), (685, 305428), (1370, 152714), (2633, 79460), (2740, 76357), (3973, 52660), (5266, 39730), (7946, 26330), (10532, 19865), (13165, 15892)]