8640320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:128

約数の個数: 112

約数和(自身を含む): 23213568

約数和(自身を除く): 14573248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 67, 80, 104, 124, 130, 134, 155, 160, 208, 248, 260, 268, 310, 320, 335, 403, 416, 496, 520, 536, 620, 670, 806, 832, 871, 992, 1040, 1072, 1240, 1340, 1612, 1742, 1984, 2015, 2077, 2080, 2144, 2480, 2680, 3224, 3484, 4030, 4154, 4160, 4288, 4355, 4960, 5360, 6448, 6968, 8060, 8308, 8710, 9920, 10385, 10720, 12896, 13936, 16120, 16616, 17420, 20770, 21440, 25792, 27001, 27872, 32240, 33232, 34840, 41540, 54002, 55744, 64480, 66464, 69680, 83080, 108004, 128960, 132928, 135005, 139360, 166160, 216008, 270010, 278720, 332320, 432016, 540020, 664640, 864032, 1080040, 1728064, 2160080, 4320160, 8640320]

約数ペア:

[(1, 8640320), (2, 4320160), (4, 2160080), (5, 1728064), (8, 1080040), (10, 864032), (13, 664640), (16, 540020), (20, 432016), (26, 332320), (31, 278720), (32, 270010), (40, 216008), (52, 166160), (62, 139360), (64, 135005), (65, 132928), (67, 128960), (80, 108004), (104, 83080), (124, 69680), (130, 66464), (134, 64480), (155, 55744), (160, 54002), (208, 41540), (248, 34840), (260, 33232), (268, 32240), (310, 27872), (320, 27001), (335, 25792), (403, 21440), (416, 20770), (496, 17420), (520, 16616), (536, 16120), (620, 13936), (670, 12896), (806, 10720), (832, 10385), (871, 9920), (992, 8710), (1040, 8308), (1072, 8060), (1240, 6968), (1340, 6448), (1612, 5360), (1742, 4960), (1984, 4355), (2015, 4288), (2077, 4160), (2080, 4154), (2144, 4030), (2480, 3484), (2680, 3224)]