20246465720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{905477}}^1$

素因数の和:905544

約数の個数: 64

約数和(自身を含む): 50199700320

約数和(自身を除く): 29953234600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1720, 2236, 2795, 4472, 5590, 11180, 22360, 905477, 1810954, 3621908, 4527385, 7243816, 9054770, 11771201, 18109540, 23542402, 36219080, 38935511, 47084804, 58856005, 77871022, 94169608, 117712010, 155742044, 194677555, 235424020, 311484088, 389355110, 470848040, 506161643, 778710220, 1012323286, 1557420440, 2024646572, 2530808215, 4049293144, 5061616430, 10123232860, 20246465720]

約数ペア:

[(1, 20246465720), (2, 10123232860), (4, 5061616430), (5, 4049293144), (8, 2530808215), (10, 2024646572), (13, 1557420440), (20, 1012323286), (26, 778710220), (40, 506161643), (43, 470848040), (52, 389355110), (65, 311484088), (86, 235424020), (104, 194677555), (130, 155742044), (172, 117712010), (215, 94169608), (260, 77871022), (344, 58856005), (430, 47084804), (520, 38935511), (559, 36219080), (860, 23542402), (1118, 18109540), (1720, 11771201), (2236, 9054770), (2795, 7243816), (4472, 4527385), (5590, 3621908), (11180, 1810954), (22360, 905477)]