21128328

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{22573}}^1$

素因数の和:22598

約数の個数: 48

約数和(自身を含む): 61627020

約数和(自身を除く): 40498692

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 22573, 45146, 67719, 90292, 135438, 180584, 203157, 270876, 293449, 406314, 541752, 586898, 812628, 880347, 1173796, 1625256, 1760694, 2347592, 2641041, 3521388, 5282082, 7042776, 10564164, 21128328]

約数ペア:

[(1, 21128328), (2, 10564164), (3, 7042776), (4, 5282082), (6, 3521388), (8, 2641041), (9, 2347592), (12, 1760694), (13, 1625256), (18, 1173796), (24, 880347), (26, 812628), (36, 586898), (39, 541752), (52, 406314), (72, 293449), (78, 270876), (104, 203157), (117, 180584), (156, 135438), (234, 90292), (312, 67719), (468, 45146), (936, 22573)]