21101120

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 112

約数和(自身を含む): 54425088

約数和(自身を除く): 33323968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 47, 61, 64, 80, 92, 94, 115, 122, 160, 184, 188, 230, 235, 244, 305, 320, 368, 376, 460, 470, 488, 610, 736, 752, 920, 940, 976, 1081, 1220, 1403, 1472, 1504, 1840, 1880, 1952, 2162, 2440, 2806, 2867, 3008, 3680, 3760, 3904, 4324, 4880, 5405, 5612, 5734, 7015, 7360, 7520, 8648, 9760, 10810, 11224, 11468, 14030, 14335, 15040, 17296, 19520, 21620, 22448, 22936, 28060, 28670, 34592, 43240, 44896, 45872, 56120, 57340, 65941, 69184, 86480, 89792, 91744, 112240, 114680, 131882, 172960, 183488, 224480, 229360, 263764, 329705, 345920, 448960, 458720, 527528, 659410, 917440, 1055056, 1318820, 2110112, 2637640, 4220224, 5275280, 10550560, 21101120]

約数ペア:

[(1, 21101120), (2, 10550560), (4, 5275280), (5, 4220224), (8, 2637640), (10, 2110112), (16, 1318820), (20, 1055056), (23, 917440), (32, 659410), (40, 527528), (46, 458720), (47, 448960), (61, 345920), (64, 329705), (80, 263764), (92, 229360), (94, 224480), (115, 183488), (122, 172960), (160, 131882), (184, 114680), (188, 112240), (230, 91744), (235, 89792), (244, 86480), (305, 69184), (320, 65941), (368, 57340), (376, 56120), (460, 45872), (470, 44896), (488, 43240), (610, 34592), (736, 28670), (752, 28060), (920, 22936), (940, 22448), (976, 21620), (1081, 19520), (1220, 17296), (1403, 15040), (1472, 14335), (1504, 14030), (1840, 11468), (1880, 11224), (1952, 10810), (2162, 9760), (2440, 8648), (2806, 7520), (2867, 7360), (3008, 7015), (3680, 5734), (3760, 5612), (3904, 5405), (4324, 4880)]