20055520

素因数分解:

$2^5\times 5^1\times {\mathrm{163}}^1\times {\mathrm{769}}^1$

素因数の和:947

約数の個数: 48

約数和(自身を含む): 47733840

約数和(自身を除く): 27678320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 163, 326, 652, 769, 815, 1304, 1538, 1630, 2608, 3076, 3260, 3845, 5216, 6152, 6520, 7690, 12304, 13040, 15380, 24608, 26080, 30760, 61520, 123040, 125347, 250694, 501388, 626735, 1002776, 1253470, 2005552, 2506940, 4011104, 5013880, 10027760, 20055520]

約数ペア:

[(1, 20055520), (2, 10027760), (4, 5013880), (5, 4011104), (8, 2506940), (10, 2005552), (16, 1253470), (20, 1002776), (32, 626735), (40, 501388), (80, 250694), (160, 125347), (163, 123040), (326, 61520), (652, 30760), (769, 26080), (815, 24608), (1304, 15380), (1538, 13040), (1630, 12304), (2608, 7690), (3076, 6520), (3260, 6152), (3845, 5216)]