128982440

素因数分解:

$2^3\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{2441}}^1$

素因数の和:3773

約数の個数: 32

約数和(自身を含む): 290549160

約数和(自身を除く): 161566720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1321, 2441, 2642, 4882, 5284, 6605, 9764, 10568, 12205, 13210, 19528, 24410, 26420, 48820, 52840, 97640, 3224561, 6449122, 12898244, 16122805, 25796488, 32245610, 64491220, 128982440]

約数ペア:

[(1, 128982440), (2, 64491220), (4, 32245610), (5, 25796488), (8, 16122805), (10, 12898244), (20, 6449122), (40, 3224561), (1321, 97640), (2441, 52840), (2642, 48820), (4882, 26420), (5284, 24410), (6605, 19528), (9764, 13210), (10568, 12205)]