21955640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4127}}^1$

素因数の和:4164

約数の個数: 64

約数和(自身を含む): 59443200

約数和(自身を除く): 37487560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4127, 5320, 8254, 16508, 20635, 28889, 33016, 41270, 57778, 78413, 82540, 115556, 144445, 156826, 165080, 231112, 288890, 313652, 392065, 548891, 577780, 627304, 784130, 1097782, 1155560, 1568260, 2195564, 2744455, 3136520, 4391128, 5488910, 10977820, 21955640]

約数ペア:

[(1, 21955640), (2, 10977820), (4, 5488910), (5, 4391128), (7, 3136520), (8, 2744455), (10, 2195564), (14, 1568260), (19, 1155560), (20, 1097782), (28, 784130), (35, 627304), (38, 577780), (40, 548891), (56, 392065), (70, 313652), (76, 288890), (95, 231112), (133, 165080), (140, 156826), (152, 144445), (190, 115556), (266, 82540), (280, 78413), (380, 57778), (532, 41270), (665, 33016), (760, 28889), (1064, 20635), (1330, 16508), (2660, 8254), (4127, 5320)]