20101328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{401}}^1$

素因数の和:663

約数の個数: 40

約数和(自身を含む): 42221256

約数和(自身を除く): 22119928

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 241, 401, 482, 802, 964, 1604, 1928, 3133, 3208, 3856, 5213, 6266, 6416, 10426, 12532, 20852, 25064, 41704, 50128, 83408, 96641, 193282, 386564, 773128, 1256333, 1546256, 2512666, 5025332, 10050664, 20101328]

約数ペア:

[(1, 20101328), (2, 10050664), (4, 5025332), (8, 2512666), (13, 1546256), (16, 1256333), (26, 773128), (52, 386564), (104, 193282), (208, 96641), (241, 83408), (401, 50128), (482, 41704), (802, 25064), (964, 20852), (1604, 12532), (1928, 10426), (3133, 6416), (3208, 6266), (3856, 5213)]