18905180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 46884096

約数和(自身を除く): 27978916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 101, 140, 191, 196, 202, 245, 382, 404, 490, 505, 707, 764, 955, 980, 1010, 1337, 1414, 1910, 2020, 2674, 2828, 3535, 3820, 4949, 5348, 6685, 7070, 9359, 9898, 13370, 14140, 18718, 19291, 19796, 24745, 26740, 37436, 38582, 46795, 49490, 77164, 93590, 96455, 98980, 135037, 187180, 192910, 270074, 385820, 540148, 675185, 945259, 1350370, 1890518, 2700740, 3781036, 4726295, 9452590, 18905180]

約数ペア:

[(1, 18905180), (2, 9452590), (4, 4726295), (5, 3781036), (7, 2700740), (10, 1890518), (14, 1350370), (20, 945259), (28, 675185), (35, 540148), (49, 385820), (70, 270074), (98, 192910), (101, 187180), (140, 135037), (191, 98980), (196, 96455), (202, 93590), (245, 77164), (382, 49490), (404, 46795), (490, 38582), (505, 37436), (707, 26740), (764, 24745), (955, 19796), (980, 19291), (1010, 18718), (1337, 14140), (1414, 13370), (1910, 9898), (2020, 9359), (2674, 7070), (2828, 6685), (3535, 5348), (3820, 4949)]