18803420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{997}}^1$

素因数の和:1070

約数の個数: 48

約数和(自身を含む): 42251328

約数和(自身を除く): 23447908

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 115, 164, 205, 230, 410, 460, 820, 943, 997, 1886, 1994, 3772, 3988, 4715, 4985, 9430, 9970, 18860, 19940, 22931, 40877, 45862, 81754, 91724, 114655, 163508, 204385, 229310, 408770, 458620, 817540, 940171, 1880342, 3760684, 4700855, 9401710, 18803420]

約数ペア:

[(1, 18803420), (2, 9401710), (4, 4700855), (5, 3760684), (10, 1880342), (20, 940171), (23, 817540), (41, 458620), (46, 408770), (82, 229310), (92, 204385), (115, 163508), (164, 114655), (205, 91724), (230, 81754), (410, 45862), (460, 40877), (820, 22931), (943, 19940), (997, 18860), (1886, 9970), (1994, 9430), (3772, 4985), (3988, 4715)]