31328120

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 73872000

約数和(自身を除く): 42543880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 113, 116, 145, 226, 232, 239, 290, 452, 478, 565, 580, 904, 956, 1130, 1160, 1195, 1912, 2260, 2390, 3277, 4520, 4780, 6554, 6931, 9560, 13108, 13862, 16385, 26216, 27007, 27724, 32770, 34655, 54014, 55448, 65540, 69310, 108028, 131080, 135035, 138620, 216056, 270070, 277240, 540140, 783203, 1080280, 1566406, 3132812, 3916015, 6265624, 7832030, 15664060, 31328120]

約数ペア:

[(1, 31328120), (2, 15664060), (4, 7832030), (5, 6265624), (8, 3916015), (10, 3132812), (20, 1566406), (29, 1080280), (40, 783203), (58, 540140), (113, 277240), (116, 270070), (145, 216056), (226, 138620), (232, 135035), (239, 131080), (290, 108028), (452, 69310), (478, 65540), (565, 55448), (580, 54014), (904, 34655), (956, 32770), (1130, 27724), (1160, 27007), (1195, 26216), (1912, 16385), (2260, 13862), (2390, 13108), (3277, 9560), (4520, 6931), (4780, 6554)]