20488630

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 38750400

約数和(自身を除く): 18261770

約数列:

[1, 2, 5, 10, 23, 46, 115, 229, 230, 389, 458, 778, 1145, 1945, 2290, 3890, 5267, 8947, 10534, 17894, 26335, 44735, 52670, 89081, 89470, 178162, 445405, 890810, 2048863, 4097726, 10244315, 20488630]

約数ペア:

[(1, 20488630), (2, 10244315), (5, 4097726), (10, 2048863), (23, 890810), (46, 445405), (115, 178162), (229, 89470), (230, 89081), (389, 52670), (458, 44735), (778, 26335), (1145, 17894), (1945, 10534), (2290, 8947), (3890, 5267)]