21906924

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{389}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 58247280

約数和(自身を除く): 36340356

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 361, 389, 494, 722, 741, 778, 988, 1083, 1167, 1444, 1482, 1556, 2166, 2334, 2964, 4332, 4668, 4693, 5057, 7391, 9386, 10114, 14079, 14782, 15171, 18772, 20228, 22173, 28158, 29564, 30342, 44346, 56316, 60684, 88692, 96083, 140429, 192166, 280858, 288249, 384332, 421287, 561716, 576498, 842574, 1152996, 1685148, 1825577, 3651154, 5476731, 7302308, 10953462, 21906924]

約数ペア:

[(1, 21906924), (2, 10953462), (3, 7302308), (4, 5476731), (6, 3651154), (12, 1825577), (13, 1685148), (19, 1152996), (26, 842574), (38, 576498), (39, 561716), (52, 421287), (57, 384332), (76, 288249), (78, 280858), (114, 192166), (156, 140429), (228, 96083), (247, 88692), (361, 60684), (389, 56316), (494, 44346), (722, 30342), (741, 29564), (778, 28158), (988, 22173), (1083, 20228), (1167, 18772), (1444, 15171), (1482, 14782), (1556, 14079), (2166, 10114), (2334, 9386), (2964, 7391), (4332, 5057), (4668, 4693)]