20537860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1103}}^1$

素因数の和:1145

約数の個数: 72

約数和(自身を含む): 52859520

約数和(自身を除く): 32321660

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1103, 1330, 1862, 2206, 2660, 3724, 4412, 4655, 5515, 7721, 9310, 11030, 15442, 18620, 20957, 22060, 30884, 38605, 41914, 54047, 77210, 83828, 104785, 108094, 146699, 154420, 209570, 216188, 270235, 293398, 419140, 540470, 586796, 733495, 1026893, 1080940, 1466990, 2053786, 2933980, 4107572, 5134465, 10268930, 20537860]

約数ペア:

[(1, 20537860), (2, 10268930), (4, 5134465), (5, 4107572), (7, 2933980), (10, 2053786), (14, 1466990), (19, 1080940), (20, 1026893), (28, 733495), (35, 586796), (38, 540470), (49, 419140), (70, 293398), (76, 270235), (95, 216188), (98, 209570), (133, 154420), (140, 146699), (190, 108094), (196, 104785), (245, 83828), (266, 77210), (380, 54047), (490, 41914), (532, 38605), (665, 30884), (931, 22060), (980, 20957), (1103, 18620), (1330, 15442), (1862, 11030), (2206, 9310), (2660, 7721), (3724, 5515), (4412, 4655)]