21222560

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:190

約数の個数: 96

約数和(自身を含む): 53706240

約数和(自身を除く): 32483680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 73, 79, 80, 92, 115, 146, 158, 160, 184, 230, 292, 316, 365, 368, 395, 460, 584, 632, 730, 736, 790, 920, 1168, 1264, 1460, 1580, 1679, 1817, 1840, 2336, 2528, 2920, 3160, 3358, 3634, 3680, 5767, 5840, 6320, 6716, 7268, 8395, 9085, 11534, 11680, 12640, 13432, 14536, 16790, 18170, 23068, 26864, 28835, 29072, 33580, 36340, 46136, 53728, 57670, 58144, 67160, 72680, 92272, 115340, 132641, 134320, 145360, 184544, 230680, 265282, 268640, 290720, 461360, 530564, 663205, 922720, 1061128, 1326410, 2122256, 2652820, 4244512, 5305640, 10611280, 21222560]

約数ペア:

[(1, 21222560), (2, 10611280), (4, 5305640), (5, 4244512), (8, 2652820), (10, 2122256), (16, 1326410), (20, 1061128), (23, 922720), (32, 663205), (40, 530564), (46, 461360), (73, 290720), (79, 268640), (80, 265282), (92, 230680), (115, 184544), (146, 145360), (158, 134320), (160, 132641), (184, 115340), (230, 92272), (292, 72680), (316, 67160), (365, 58144), (368, 57670), (395, 53728), (460, 46136), (584, 36340), (632, 33580), (730, 29072), (736, 28835), (790, 26864), (920, 23068), (1168, 18170), (1264, 16790), (1460, 14536), (1580, 13432), (1679, 12640), (1817, 11680), (1840, 11534), (2336, 9085), (2528, 8395), (2920, 7268), (3160, 6716), (3358, 6320), (3634, 5840), (3680, 5767)]