20440940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2711}}^1$

素因数の和:2762

約数の個数: 48

約数和(自身を含む): 47839680

約数和(自身を除く): 27398740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2711, 3770, 5422, 7540, 10844, 13555, 27110, 35243, 54220, 70486, 78619, 140972, 157238, 176215, 314476, 352430, 393095, 704860, 786190, 1022047, 1572380, 2044094, 4088188, 5110235, 10220470, 20440940]

約数ペア:

[(1, 20440940), (2, 10220470), (4, 5110235), (5, 4088188), (10, 2044094), (13, 1572380), (20, 1022047), (26, 786190), (29, 704860), (52, 393095), (58, 352430), (65, 314476), (116, 176215), (130, 157238), (145, 140972), (260, 78619), (290, 70486), (377, 54220), (580, 35243), (754, 27110), (1508, 13555), (1885, 10844), (2711, 7540), (3770, 5422)]