28828660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1279}}^1$

素因数の和:1325

約数の個数: 72

約数和(自身を含む): 73543680

約数和(自身を除く): 44715020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1279, 1610, 2254, 2558, 3220, 4508, 5116, 5635, 6395, 8953, 11270, 12790, 17906, 22540, 25580, 29417, 35812, 44765, 58834, 62671, 89530, 117668, 125342, 147085, 179060, 205919, 250684, 294170, 313355, 411838, 588340, 626710, 823676, 1029595, 1253420, 1441433, 2059190, 2882866, 4118380, 5765732, 7207165, 14414330, 28828660]

約数ペア:

[(1, 28828660), (2, 14414330), (4, 7207165), (5, 5765732), (7, 4118380), (10, 2882866), (14, 2059190), (20, 1441433), (23, 1253420), (28, 1029595), (35, 823676), (46, 626710), (49, 588340), (70, 411838), (92, 313355), (98, 294170), (115, 250684), (140, 205919), (161, 179060), (196, 147085), (230, 125342), (245, 117668), (322, 89530), (460, 62671), (490, 58834), (644, 44765), (805, 35812), (980, 29417), (1127, 25580), (1279, 22540), (1610, 17906), (2254, 12790), (2558, 11270), (3220, 8953), (4508, 6395), (5116, 5635)]