19091140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 41690880

約数和(自身を除く): 22599740

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 281, 316, 395, 430, 562, 790, 860, 1124, 1405, 1580, 2810, 3397, 5620, 6794, 12083, 13588, 16985, 22199, 24166, 33970, 44398, 48332, 60415, 67940, 88796, 110995, 120830, 221990, 241660, 443980, 954557, 1909114, 3818228, 4772785, 9545570, 19091140]

約数ペア:

[(1, 19091140), (2, 9545570), (4, 4772785), (5, 3818228), (10, 1909114), (20, 954557), (43, 443980), (79, 241660), (86, 221990), (158, 120830), (172, 110995), (215, 88796), (281, 67940), (316, 60415), (395, 48332), (430, 44398), (562, 33970), (790, 24166), (860, 22199), (1124, 16985), (1405, 13588), (1580, 12083), (2810, 6794), (3397, 5620)]