72840320

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:326

約数の個数: 128

約数和(自身を含む): 202694400

約数和(自身を除く): 129854080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 128, 140, 142, 160, 224, 229, 280, 284, 320, 355, 448, 458, 497, 560, 568, 640, 710, 896, 916, 994, 1120, 1136, 1145, 1420, 1603, 1832, 1988, 2240, 2272, 2290, 2485, 2840, 3206, 3664, 3976, 4480, 4544, 4580, 4970, 5680, 6412, 7328, 7952, 8015, 9088, 9160, 9940, 11360, 12824, 14656, 15904, 16030, 16259, 18320, 19880, 22720, 25648, 29312, 31808, 32060, 32518, 36640, 39760, 45440, 51296, 63616, 64120, 65036, 73280, 79520, 81295, 102592, 113813, 128240, 130072, 146560, 159040, 162590, 205184, 227626, 256480, 260144, 318080, 325180, 455252, 512960, 520288, 569065, 650360, 910504, 1025920, 1040576, 1138130, 1300720, 1821008, 2081152, 2276260, 2601440, 3642016, 4552520, 5202880, 7284032, 9105040, 10405760, 14568064, 18210080, 36420160, 72840320]

約数ペア:

[(1, 72840320), (2, 36420160), (4, 18210080), (5, 14568064), (7, 10405760), (8, 9105040), (10, 7284032), (14, 5202880), (16, 4552520), (20, 3642016), (28, 2601440), (32, 2276260), (35, 2081152), (40, 1821008), (56, 1300720), (64, 1138130), (70, 1040576), (71, 1025920), (80, 910504), (112, 650360), (128, 569065), (140, 520288), (142, 512960), (160, 455252), (224, 325180), (229, 318080), (280, 260144), (284, 256480), (320, 227626), (355, 205184), (448, 162590), (458, 159040), (497, 146560), (560, 130072), (568, 128240), (640, 113813), (710, 102592), (896, 81295), (916, 79520), (994, 73280), (1120, 65036), (1136, 64120), (1145, 63616), (1420, 51296), (1603, 45440), (1832, 39760), (1988, 36640), (2240, 32518), (2272, 32060), (2290, 31808), (2485, 29312), (2840, 25648), (3206, 22720), (3664, 19880), (3976, 18320), (4480, 16259), (4544, 16030), (4580, 15904), (4970, 14656), (5680, 12824), (6412, 11360), (7328, 9940), (7952, 9160), (8015, 9088)]