31117725

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 60933600

約数和(自身を除く): 29815875

約数列:

[1, 3, 5, 9, 15, 19, 25, 29, 45, 57, 75, 87, 95, 145, 171, 225, 251, 261, 285, 435, 475, 551, 725, 753, 855, 1255, 1305, 1425, 1653, 2175, 2259, 2755, 3765, 4275, 4769, 4959, 6275, 6525, 7279, 8265, 11295, 13775, 14307, 18825, 21837, 23845, 24795, 36395, 41325, 42921, 56475, 65511, 71535, 109185, 119225, 123975, 138301, 181975, 214605, 327555, 357675, 414903, 545925, 691505, 1073025, 1244709, 1637775, 2074515, 3457525, 6223545, 10372575, 31117725]

約数ペア:

[(1, 31117725), (3, 10372575), (5, 6223545), (9, 3457525), (15, 2074515), (19, 1637775), (25, 1244709), (29, 1073025), (45, 691505), (57, 545925), (75, 414903), (87, 357675), (95, 327555), (145, 214605), (171, 181975), (225, 138301), (251, 123975), (261, 119225), (285, 109185), (435, 71535), (475, 65511), (551, 56475), (725, 42921), (753, 41325), (855, 36395), (1255, 24795), (1305, 23845), (1425, 21837), (1653, 18825), (2175, 14307), (2259, 13775), (2755, 11295), (3765, 8265), (4275, 7279), (4769, 6525), (4959, 6275)]