64981580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{643}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 141947904

約数和(自身を除く): 76966324

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 310, 326, 620, 643, 652, 815, 1286, 1630, 2572, 3215, 3260, 5053, 6430, 10106, 12860, 19933, 20212, 25265, 39866, 50530, 79732, 99665, 101060, 104809, 199330, 209618, 398660, 419236, 524045, 1048090, 2096180, 3249079, 6498158, 12996316, 16245395, 32490790, 64981580]

約数ペア:

[(1, 64981580), (2, 32490790), (4, 16245395), (5, 12996316), (10, 6498158), (20, 3249079), (31, 2096180), (62, 1048090), (124, 524045), (155, 419236), (163, 398660), (310, 209618), (326, 199330), (620, 104809), (643, 101060), (652, 99665), (815, 79732), (1286, 50530), (1630, 39866), (2572, 25265), (3215, 20212), (3260, 19933), (5053, 12860), (6430, 10106)]