18414740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1321}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 41976144

約数和(自身を除く): 23561404

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1321, 1394, 2642, 2788, 3485, 5284, 6605, 6970, 13210, 13940, 22457, 26420, 44914, 54161, 89828, 108322, 112285, 216644, 224570, 270805, 449140, 541610, 920737, 1083220, 1841474, 3682948, 4603685, 9207370, 18414740]

約数ペア:

[(1, 18414740), (2, 9207370), (4, 4603685), (5, 3682948), (10, 1841474), (17, 1083220), (20, 920737), (34, 541610), (41, 449140), (68, 270805), (82, 224570), (85, 216644), (164, 112285), (170, 108322), (205, 89828), (340, 54161), (410, 44914), (697, 26420), (820, 22457), (1321, 13940), (1394, 13210), (2642, 6970), (2788, 6605), (3485, 5284)]