19902410

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 42923520

約数和(自身を除く): 23021110

約数列:

[1, 2, 5, 10, 11, 17, 22, 29, 34, 55, 58, 85, 110, 145, 170, 187, 290, 319, 367, 374, 493, 638, 734, 935, 986, 1595, 1835, 1870, 2465, 3190, 3670, 4037, 4930, 5423, 6239, 8074, 10643, 10846, 12478, 20185, 21286, 27115, 31195, 40370, 53215, 54230, 62390, 68629, 106430, 117073, 137258, 180931, 234146, 343145, 361862, 585365, 686290, 904655, 1170730, 1809310, 1990241, 3980482, 9951205, 19902410]

約数ペア:

[(1, 19902410), (2, 9951205), (5, 3980482), (10, 1990241), (11, 1809310), (17, 1170730), (22, 904655), (29, 686290), (34, 585365), (55, 361862), (58, 343145), (85, 234146), (110, 180931), (145, 137258), (170, 117073), (187, 106430), (290, 68629), (319, 62390), (367, 54230), (374, 53215), (493, 40370), (638, 31195), (734, 27115), (935, 21286), (986, 20185), (1595, 12478), (1835, 10846), (1870, 10643), (2465, 8074), (3190, 6239), (3670, 5423), (4037, 4930)]