81254480

素因数分解:

$2^4\times 5^1\times {\mathrm{743}}^1\times {\mathrm{1367}}^1$

素因数の和:2123

約数の個数: 40

約数和(自身を含む): 189309312

約数和(自身を除く): 108054832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 743, 1367, 1486, 2734, 2972, 3715, 5468, 5944, 6835, 7430, 10936, 11888, 13670, 14860, 21872, 27340, 29720, 54680, 59440, 109360, 1015681, 2031362, 4062724, 5078405, 8125448, 10156810, 16250896, 20313620, 40627240, 81254480]

約数ペア:

[(1, 81254480), (2, 40627240), (4, 20313620), (5, 16250896), (8, 10156810), (10, 8125448), (16, 5078405), (20, 4062724), (40, 2031362), (80, 1015681), (743, 109360), (1367, 59440), (1486, 54680), (2734, 29720), (2972, 27340), (3715, 21872), (5468, 14860), (5944, 13670), (6835, 11888), (7430, 10936)]