20128128

素因数分解:

$2^7\times 3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:136

約数の個数: 128

約数和(自身を含む): 58164480

約数和(自身を除く): 38036352

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 32, 43, 46, 48, 53, 64, 69, 86, 92, 96, 106, 128, 129, 138, 159, 172, 184, 192, 212, 258, 276, 318, 344, 368, 384, 424, 516, 552, 636, 688, 736, 848, 989, 1032, 1104, 1219, 1272, 1376, 1472, 1696, 1978, 2064, 2208, 2279, 2438, 2544, 2752, 2944, 2967, 3392, 3657, 3956, 4128, 4416, 4558, 4876, 5088, 5504, 5934, 6784, 6837, 7314, 7912, 8256, 8832, 9116, 9752, 10176, 11868, 13674, 14628, 15824, 16512, 18232, 19504, 20352, 23736, 27348, 29256, 31648, 36464, 39008, 47472, 52417, 54696, 58512, 63296, 72928, 78016, 94944, 104834, 109392, 117024, 126592, 145856, 156032, 157251, 189888, 209668, 218784, 234048, 291712, 314502, 379776, 419336, 437568, 468096, 629004, 838672, 875136, 1258008, 1677344, 2516016, 3354688, 5032032, 6709376, 10064064, 20128128]

約数ペア:

[(1, 20128128), (2, 10064064), (3, 6709376), (4, 5032032), (6, 3354688), (8, 2516016), (12, 1677344), (16, 1258008), (23, 875136), (24, 838672), (32, 629004), (43, 468096), (46, 437568), (48, 419336), (53, 379776), (64, 314502), (69, 291712), (86, 234048), (92, 218784), (96, 209668), (106, 189888), (128, 157251), (129, 156032), (138, 145856), (159, 126592), (172, 117024), (184, 109392), (192, 104834), (212, 94944), (258, 78016), (276, 72928), (318, 63296), (344, 58512), (368, 54696), (384, 52417), (424, 47472), (516, 39008), (552, 36464), (636, 31648), (688, 29256), (736, 27348), (848, 23736), (989, 20352), (1032, 19504), (1104, 18232), (1219, 16512), (1272, 15824), (1376, 14628), (1472, 13674), (1696, 11868), (1978, 10176), (2064, 9752), (2208, 9116), (2279, 8832), (2438, 8256), (2544, 7912), (2752, 7314), (2944, 6837), (2967, 6784), (3392, 5934), (3657, 5504), (3956, 5088), (4128, 4876), (4416, 4558)]