20966120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:607

約数の個数: 96

約数和(自身を含む): 57866400

約数和(自身を除く): 36900280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 245, 266, 280, 380, 392, 490, 532, 563, 665, 760, 931, 980, 1064, 1126, 1330, 1862, 1960, 2252, 2660, 2815, 3724, 3941, 4504, 4655, 5320, 5630, 7448, 7882, 9310, 10697, 11260, 15764, 18620, 19705, 21394, 22520, 27587, 31528, 37240, 39410, 42788, 53485, 55174, 74879, 78820, 85576, 106970, 110348, 137935, 149758, 157640, 213940, 220696, 275870, 299516, 374395, 427880, 524153, 551740, 599032, 748790, 1048306, 1103480, 1497580, 2096612, 2620765, 2995160, 4193224, 5241530, 10483060, 20966120]

約数ペア:

[(1, 20966120), (2, 10483060), (4, 5241530), (5, 4193224), (7, 2995160), (8, 2620765), (10, 2096612), (14, 1497580), (19, 1103480), (20, 1048306), (28, 748790), (35, 599032), (38, 551740), (40, 524153), (49, 427880), (56, 374395), (70, 299516), (76, 275870), (95, 220696), (98, 213940), (133, 157640), (140, 149758), (152, 137935), (190, 110348), (196, 106970), (245, 85576), (266, 78820), (280, 74879), (380, 55174), (392, 53485), (490, 42788), (532, 39410), (563, 37240), (665, 31528), (760, 27587), (931, 22520), (980, 21394), (1064, 19705), (1126, 18620), (1330, 15764), (1862, 11260), (1960, 10697), (2252, 9310), (2660, 7882), (2815, 7448), (3724, 5630), (3941, 5320), (4504, 4655)]