20831280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 160

約数和(自身を含む): 69370560

約数和(自身を除く): 48539280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 40, 41, 48, 58, 60, 73, 80, 82, 87, 116, 120, 123, 145, 146, 164, 174, 205, 219, 232, 240, 246, 290, 292, 328, 348, 365, 410, 435, 438, 464, 492, 580, 584, 615, 656, 696, 730, 820, 870, 876, 984, 1095, 1160, 1168, 1189, 1230, 1392, 1460, 1640, 1740, 1752, 1968, 2117, 2190, 2320, 2378, 2460, 2920, 2993, 3280, 3480, 3504, 3567, 4234, 4380, 4756, 4920, 5840, 5945, 5986, 6351, 6960, 7134, 8468, 8760, 8979, 9512, 9840, 10585, 11890, 11972, 12702, 14268, 14965, 16936, 17520, 17835, 17958, 19024, 21170, 23780, 23944, 25404, 28536, 29930, 31755, 33872, 35670, 35916, 42340, 44895, 47560, 47888, 50808, 57072, 59860, 63510, 71340, 71832, 84680, 86797, 89790, 95120, 101616, 119720, 127020, 142680, 143664, 169360, 173594, 179580, 239440, 254040, 260391, 285360, 347188, 359160, 433985, 508080, 520782, 694376, 718320, 867970, 1041564, 1301955, 1388752, 1735940, 2083128, 2603910, 3471880, 4166256, 5207820, 6943760, 10415640, 20831280]

約数ペア:

[(1, 20831280), (2, 10415640), (3, 6943760), (4, 5207820), (5, 4166256), (6, 3471880), (8, 2603910), (10, 2083128), (12, 1735940), (15, 1388752), (16, 1301955), (20, 1041564), (24, 867970), (29, 718320), (30, 694376), (40, 520782), (41, 508080), (48, 433985), (58, 359160), (60, 347188), (73, 285360), (80, 260391), (82, 254040), (87, 239440), (116, 179580), (120, 173594), (123, 169360), (145, 143664), (146, 142680), (164, 127020), (174, 119720), (205, 101616), (219, 95120), (232, 89790), (240, 86797), (246, 84680), (290, 71832), (292, 71340), (328, 63510), (348, 59860), (365, 57072), (410, 50808), (435, 47888), (438, 47560), (464, 44895), (492, 42340), (580, 35916), (584, 35670), (615, 33872), (656, 31755), (696, 29930), (730, 28536), (820, 25404), (870, 23944), (876, 23780), (984, 21170), (1095, 19024), (1160, 17958), (1168, 17835), (1189, 17520), (1230, 16936), (1392, 14965), (1460, 14268), (1640, 12702), (1740, 11972), (1752, 11890), (1968, 10585), (2117, 9840), (2190, 9512), (2320, 8979), (2378, 8760), (2460, 8468), (2920, 7134), (2993, 6960), (3280, 6351), (3480, 5986), (3504, 5945), (3567, 5840), (4234, 4920), (4380, 4756)]