42270820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{643}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 94127040

約数和(自身を除く): 51856220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 173, 190, 346, 380, 643, 692, 865, 1286, 1730, 2572, 3215, 3287, 3460, 6430, 6574, 12217, 12860, 13148, 16435, 24434, 32870, 48868, 61085, 65740, 111239, 122170, 222478, 244340, 444956, 556195, 1112390, 2113541, 2224780, 4227082, 8454164, 10567705, 21135410, 42270820]

約数ペア:

[(1, 42270820), (2, 21135410), (4, 10567705), (5, 8454164), (10, 4227082), (19, 2224780), (20, 2113541), (38, 1112390), (76, 556195), (95, 444956), (173, 244340), (190, 222478), (346, 122170), (380, 111239), (643, 65740), (692, 61085), (865, 48868), (1286, 32870), (1730, 24434), (2572, 16435), (3215, 13148), (3287, 12860), (3460, 12217), (6430, 6574)]