21356880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:165

約数の個数: 160

約数和(自身を含む): 71352576

約数和(自身を除く): 49995696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 53, 60, 69, 73, 80, 92, 106, 115, 120, 138, 146, 159, 184, 212, 219, 230, 240, 265, 276, 292, 318, 345, 365, 368, 424, 438, 460, 530, 552, 584, 636, 690, 730, 795, 848, 876, 920, 1060, 1095, 1104, 1168, 1219, 1272, 1380, 1460, 1590, 1679, 1752, 1840, 2120, 2190, 2438, 2544, 2760, 2920, 3180, 3358, 3504, 3657, 3869, 4240, 4380, 4876, 5037, 5520, 5840, 6095, 6360, 6716, 7314, 7738, 8395, 8760, 9752, 10074, 11607, 12190, 12720, 13432, 14628, 15476, 16790, 17520, 18285, 19345, 19504, 20148, 23214, 24380, 25185, 26864, 29256, 30952, 33580, 36570, 38690, 40296, 46428, 48760, 50370, 58035, 58512, 61904, 67160, 73140, 77380, 80592, 88987, 92856, 97520, 100740, 116070, 134320, 146280, 154760, 177974, 185712, 201480, 232140, 266961, 292560, 309520, 355948, 402960, 444935, 464280, 533922, 711896, 889870, 928560, 1067844, 1334805, 1423792, 1779740, 2135688, 2669610, 3559480, 4271376, 5339220, 7118960, 10678440, 21356880]

約数ペア:

[(1, 21356880), (2, 10678440), (3, 7118960), (4, 5339220), (5, 4271376), (6, 3559480), (8, 2669610), (10, 2135688), (12, 1779740), (15, 1423792), (16, 1334805), (20, 1067844), (23, 928560), (24, 889870), (30, 711896), (40, 533922), (46, 464280), (48, 444935), (53, 402960), (60, 355948), (69, 309520), (73, 292560), (80, 266961), (92, 232140), (106, 201480), (115, 185712), (120, 177974), (138, 154760), (146, 146280), (159, 134320), (184, 116070), (212, 100740), (219, 97520), (230, 92856), (240, 88987), (265, 80592), (276, 77380), (292, 73140), (318, 67160), (345, 61904), (365, 58512), (368, 58035), (424, 50370), (438, 48760), (460, 46428), (530, 40296), (552, 38690), (584, 36570), (636, 33580), (690, 30952), (730, 29256), (795, 26864), (848, 25185), (876, 24380), (920, 23214), (1060, 20148), (1095, 19504), (1104, 19345), (1168, 18285), (1219, 17520), (1272, 16790), (1380, 15476), (1460, 14628), (1590, 13432), (1679, 12720), (1752, 12190), (1840, 11607), (2120, 10074), (2190, 9752), (2438, 8760), (2544, 8395), (2760, 7738), (2920, 7314), (3180, 6716), (3358, 6360), (3504, 6095), (3657, 5840), (3869, 5520), (4240, 5037), (4380, 4876)]