39891820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{631}}^1$

素因数の和:778

約数の個数: 48

約数和(自身を含む): 87595200

約数和(自身を除く): 47703380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 109, 116, 145, 218, 290, 436, 545, 580, 631, 1090, 1262, 2180, 2524, 3155, 3161, 6310, 6322, 12620, 12644, 15805, 18299, 31610, 36598, 63220, 68779, 73196, 91495, 137558, 182990, 275116, 343895, 365980, 687790, 1375580, 1994591, 3989182, 7978364, 9972955, 19945910, 39891820]

約数ペア:

[(1, 39891820), (2, 19945910), (4, 9972955), (5, 7978364), (10, 3989182), (20, 1994591), (29, 1375580), (58, 687790), (109, 365980), (116, 343895), (145, 275116), (218, 182990), (290, 137558), (436, 91495), (545, 73196), (580, 68779), (631, 63220), (1090, 36598), (1262, 31610), (2180, 18299), (2524, 15805), (3155, 12644), (3161, 12620), (6310, 6322)]