20104540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2039}}^1$

素因数の和:2094

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 26162660

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2039, 2465, 4078, 4930, 8156, 9860, 10195, 20390, 34663, 40780, 59131, 69326, 118262, 138652, 173315, 236524, 295655, 346630, 591310, 693260, 1005227, 1182620, 2010454, 4020908, 5026135, 10052270, 20104540]

約数ペア:

[(1, 20104540), (2, 10052270), (4, 5026135), (5, 4020908), (10, 2010454), (17, 1182620), (20, 1005227), (29, 693260), (34, 591310), (58, 346630), (68, 295655), (85, 236524), (116, 173315), (145, 138652), (170, 118262), (290, 69326), (340, 59131), (493, 40780), (580, 34663), (986, 20390), (1972, 10195), (2039, 9860), (2465, 8156), (4078, 4930)]