64621945

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 85639680

約数和(自身を除く): 21017735

約数列:

[1, 5, 19, 41, 47, 95, 205, 235, 353, 779, 893, 1765, 1927, 3895, 4465, 6707, 9635, 14473, 16591, 33535, 36613, 72365, 82955, 183065, 274987, 315229, 680231, 1374935, 1576145, 3401155, 12924389, 64621945]

約数ペア:

[(1, 64621945), (5, 12924389), (19, 3401155), (41, 1576145), (47, 1374935), (95, 680231), (205, 315229), (235, 274987), (353, 183065), (779, 82955), (893, 72365), (1765, 36613), (1927, 33535), (3895, 16591), (4465, 14473), (6707, 9635)]