390974480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:305

約数の個数: 160

約数和(自身を含む): 1031267328

約数和(自身を除く): 640292848

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 67, 80, 104, 124, 130, 134, 155, 181, 208, 248, 260, 268, 310, 335, 362, 403, 496, 520, 536, 620, 670, 724, 806, 871, 905, 1040, 1072, 1240, 1340, 1448, 1612, 1742, 1810, 2015, 2077, 2353, 2480, 2680, 2896, 3224, 3484, 3620, 4030, 4154, 4355, 4706, 5360, 5611, 6448, 6968, 7240, 8060, 8308, 8710, 9412, 10385, 11222, 11765, 12127, 13936, 14480, 16120, 16616, 17420, 18824, 20770, 22444, 23530, 24254, 27001, 28055, 32240, 33232, 34840, 37648, 41540, 44888, 47060, 48508, 54002, 56110, 60635, 69680, 72943, 83080, 89776, 94120, 97016, 108004, 112220, 121270, 135005, 145886, 157651, 166160, 188240, 194032, 216008, 224440, 242540, 270010, 291772, 315302, 364715, 375937, 432016, 448880, 485080, 540020, 583544, 630604, 729430, 751874, 788255, 970160, 1080040, 1167088, 1261208, 1458860, 1503748, 1576510, 1879685, 2160080, 2522416, 2917720, 3007496, 3153020, 3759370, 4887181, 5835440, 6014992, 6306040, 7518740, 9774362, 12612080, 15037480, 19548724, 24435905, 30074960, 39097448, 48871810, 78194896, 97743620, 195487240, 390974480]

約数ペア:

[(1, 390974480), (2, 195487240), (4, 97743620), (5, 78194896), (8, 48871810), (10, 39097448), (13, 30074960), (16, 24435905), (20, 19548724), (26, 15037480), (31, 12612080), (40, 9774362), (52, 7518740), (62, 6306040), (65, 6014992), (67, 5835440), (80, 4887181), (104, 3759370), (124, 3153020), (130, 3007496), (134, 2917720), (155, 2522416), (181, 2160080), (208, 1879685), (248, 1576510), (260, 1503748), (268, 1458860), (310, 1261208), (335, 1167088), (362, 1080040), (403, 970160), (496, 788255), (520, 751874), (536, 729430), (620, 630604), (670, 583544), (724, 540020), (806, 485080), (871, 448880), (905, 432016), (1040, 375937), (1072, 364715), (1240, 315302), (1340, 291772), (1448, 270010), (1612, 242540), (1742, 224440), (1810, 216008), (2015, 194032), (2077, 188240), (2353, 166160), (2480, 157651), (2680, 145886), (2896, 135005), (3224, 121270), (3484, 112220), (3620, 108004), (4030, 97016), (4154, 94120), (4355, 89776), (4706, 83080), (5360, 72943), (5611, 69680), (6448, 60635), (6968, 56110), (7240, 54002), (8060, 48508), (8308, 47060), (8710, 44888), (9412, 41540), (10385, 37648), (11222, 34840), (11765, 33232), (12127, 32240), (13936, 28055), (14480, 27001), (16120, 24254), (16616, 23530), (17420, 22444), (18824, 20770)]