128785280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{673}}^1$

素因数の和:728

約数の個数: 128

約数和(自身を含む): 346489920

約数和(自身を除く): 217704640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 128, 130, 160, 184, 208, 230, 260, 299, 320, 368, 416, 460, 520, 598, 640, 673, 736, 832, 920, 1040, 1196, 1346, 1472, 1495, 1664, 1840, 2080, 2392, 2692, 2944, 2990, 3365, 3680, 4160, 4784, 5384, 5980, 6730, 7360, 8320, 8749, 9568, 10768, 11960, 13460, 14720, 15479, 17498, 19136, 21536, 23920, 26920, 30958, 34996, 38272, 43072, 43745, 47840, 53840, 61916, 69992, 77395, 86144, 87490, 95680, 107680, 123832, 139984, 154790, 174980, 191360, 201227, 215360, 247664, 279968, 309580, 349960, 402454, 430720, 495328, 559936, 619160, 699920, 804908, 990656, 1006135, 1119872, 1238320, 1399840, 1609816, 1981312, 2012270, 2476640, 2799680, 3219632, 4024540, 4953280, 5599360, 6439264, 8049080, 9906560, 12878528, 16098160, 25757056, 32196320, 64392640, 128785280]

約数ペア:

[(1, 128785280), (2, 64392640), (4, 32196320), (5, 25757056), (8, 16098160), (10, 12878528), (13, 9906560), (16, 8049080), (20, 6439264), (23, 5599360), (26, 4953280), (32, 4024540), (40, 3219632), (46, 2799680), (52, 2476640), (64, 2012270), (65, 1981312), (80, 1609816), (92, 1399840), (104, 1238320), (115, 1119872), (128, 1006135), (130, 990656), (160, 804908), (184, 699920), (208, 619160), (230, 559936), (260, 495328), (299, 430720), (320, 402454), (368, 349960), (416, 309580), (460, 279968), (520, 247664), (598, 215360), (640, 201227), (673, 191360), (736, 174980), (832, 154790), (920, 139984), (1040, 123832), (1196, 107680), (1346, 95680), (1472, 87490), (1495, 86144), (1664, 77395), (1840, 69992), (2080, 61916), (2392, 53840), (2692, 47840), (2944, 43745), (2990, 43072), (3365, 38272), (3680, 34996), (4160, 30958), (4784, 26920), (5384, 23920), (5980, 21536), (6730, 19136), (7360, 17498), (8320, 15479), (8749, 14720), (9568, 13460), (10768, 11960)]