12821120

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 34957440

約数和(自身を除く): 22136320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 67, 80, 92, 104, 115, 128, 130, 134, 160, 184, 208, 230, 260, 268, 299, 320, 335, 368, 416, 460, 520, 536, 598, 640, 670, 736, 832, 871, 920, 1040, 1072, 1196, 1340, 1472, 1495, 1541, 1664, 1742, 1840, 2080, 2144, 2392, 2680, 2944, 2990, 3082, 3484, 3680, 4160, 4288, 4355, 4784, 5360, 5980, 6164, 6968, 7360, 7705, 8320, 8576, 8710, 9568, 10720, 11960, 12328, 13936, 14720, 15410, 17420, 19136, 20033, 21440, 23920, 24656, 27872, 30820, 34840, 38272, 40066, 42880, 47840, 49312, 55744, 61640, 69680, 80132, 95680, 98624, 100165, 111488, 123280, 139360, 160264, 191360, 197248, 200330, 246560, 278720, 320528, 400660, 493120, 557440, 641056, 801320, 986240, 1282112, 1602640, 2564224, 3205280, 6410560, 12821120]

約数ペア:

[(1, 12821120), (2, 6410560), (4, 3205280), (5, 2564224), (8, 1602640), (10, 1282112), (13, 986240), (16, 801320), (20, 641056), (23, 557440), (26, 493120), (32, 400660), (40, 320528), (46, 278720), (52, 246560), (64, 200330), (65, 197248), (67, 191360), (80, 160264), (92, 139360), (104, 123280), (115, 111488), (128, 100165), (130, 98624), (134, 95680), (160, 80132), (184, 69680), (208, 61640), (230, 55744), (260, 49312), (268, 47840), (299, 42880), (320, 40066), (335, 38272), (368, 34840), (416, 30820), (460, 27872), (520, 24656), (536, 23920), (598, 21440), (640, 20033), (670, 19136), (736, 17420), (832, 15410), (871, 14720), (920, 13936), (1040, 12328), (1072, 11960), (1196, 10720), (1340, 9568), (1472, 8710), (1495, 8576), (1541, 8320), (1664, 7705), (1742, 7360), (1840, 6968), (2080, 6164), (2144, 5980), (2392, 5360), (2680, 4784), (2944, 4355), (2990, 4288), (3082, 4160), (3484, 3680)]