16720540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 37029888

約数和(自身を除く): 20309348

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 163, 223, 230, 326, 446, 460, 652, 815, 892, 1115, 1630, 2230, 3260, 3749, 4460, 5129, 7498, 10258, 14996, 18745, 20516, 25645, 36349, 37490, 51290, 72698, 74980, 102580, 145396, 181745, 363490, 726980, 836027, 1672054, 3344108, 4180135, 8360270, 16720540]

約数ペア:

[(1, 16720540), (2, 8360270), (4, 4180135), (5, 3344108), (10, 1672054), (20, 836027), (23, 726980), (46, 363490), (92, 181745), (115, 145396), (163, 102580), (223, 74980), (230, 72698), (326, 51290), (446, 37490), (460, 36349), (652, 25645), (815, 20516), (892, 18745), (1115, 14996), (1630, 10258), (2230, 7498), (3260, 5129), (3749, 4460)]