20854170

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1667}}^1$

素因数の和:1819

約数の個数: 48

約数和(自身を含む): 54643680

約数和(自身を除く): 33789510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 139, 278, 417, 695, 834, 1251, 1390, 1667, 2085, 2502, 3334, 4170, 5001, 6255, 8335, 10002, 12510, 15003, 16670, 25005, 30006, 50010, 75015, 150030, 231713, 463426, 695139, 1158565, 1390278, 2085417, 2317130, 3475695, 4170834, 6951390, 10427085, 20854170]

約数ペア:

[(1, 20854170), (2, 10427085), (3, 6951390), (5, 4170834), (6, 3475695), (9, 2317130), (10, 2085417), (15, 1390278), (18, 1158565), (30, 695139), (45, 463426), (90, 231713), (139, 150030), (278, 75015), (417, 50010), (695, 30006), (834, 25005), (1251, 16670), (1390, 15003), (1667, 12510), (2085, 10002), (2502, 8335), (3334, 6255), (4170, 5001)]