20426745

素因数分解:

$3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 33586560

約数和(自身を除く): 13159815

約数列:

[1, 3, 5, 15, 97, 101, 139, 291, 303, 417, 485, 505, 695, 1455, 1515, 2085, 9797, 13483, 14039, 29391, 40449, 42117, 48985, 67415, 70195, 146955, 202245, 210585, 1361783, 4085349, 6808915, 20426745]

約数ペア:

[(1, 20426745), (3, 6808915), (5, 4085349), (15, 1361783), (97, 210585), (101, 202245), (139, 146955), (291, 70195), (303, 67415), (417, 48985), (485, 42117), (505, 40449), (695, 29391), (1455, 14039), (1515, 13483), (2085, 9797)]