18894740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2617}}^1$

素因数の和:2664

約数の個数: 36

約数和(自身を含む): 41893236

約数和(自身を除く): 22998496

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2617, 3610, 5234, 7220, 10468, 13085, 26170, 49723, 52340, 99446, 198892, 248615, 497230, 944737, 994460, 1889474, 3778948, 4723685, 9447370, 18894740]

約数ペア:

[(1, 18894740), (2, 9447370), (4, 4723685), (5, 3778948), (10, 1889474), (19, 994460), (20, 944737), (38, 497230), (76, 248615), (95, 198892), (190, 99446), (361, 52340), (380, 49723), (722, 26170), (1444, 13085), (1805, 10468), (2617, 7220), (3610, 5234)]