1301786720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1553}}^1$

素因数の和:1625

約数の個数: 144

約数和(自身を含む): 3439884672

約数和(自身を除く): 2138097952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 260, 310, 338, 403, 416, 496, 520, 620, 676, 806, 845, 992, 1040, 1240, 1352, 1553, 1612, 1690, 2015, 2080, 2480, 2704, 3106, 3224, 3380, 4030, 4960, 5239, 5408, 6212, 6448, 6760, 7765, 8060, 10478, 12424, 12896, 13520, 15530, 16120, 20189, 20956, 24848, 26195, 27040, 31060, 32240, 40378, 41912, 48143, 49696, 52390, 62120, 64480, 80756, 83824, 96286, 100945, 104780, 124240, 161512, 167648, 192572, 201890, 209560, 240715, 248480, 262457, 323024, 385144, 403780, 419120, 481430, 524914, 625859, 646048, 770288, 807560, 838240, 962860, 1049828, 1251718, 1312285, 1540576, 1615120, 1925720, 2099656, 2503436, 2624570, 3129295, 3230240, 3851440, 4199312, 5006872, 5249140, 6258590, 7702880, 8136167, 8398624, 10013744, 10498280, 12517180, 16272334, 20027488, 20996560, 25034360, 32544668, 40680835, 41993120, 50068720, 65089336, 81361670, 100137440, 130178672, 162723340, 260357344, 325446680, 650893360, 1301786720]

約数ペア:

[(1, 1301786720), (2, 650893360), (4, 325446680), (5, 260357344), (8, 162723340), (10, 130178672), (13, 100137440), (16, 81361670), (20, 65089336), (26, 50068720), (31, 41993120), (32, 40680835), (40, 32544668), (52, 25034360), (62, 20996560), (65, 20027488), (80, 16272334), (104, 12517180), (124, 10498280), (130, 10013744), (155, 8398624), (160, 8136167), (169, 7702880), (208, 6258590), (248, 5249140), (260, 5006872), (310, 4199312), (338, 3851440), (403, 3230240), (416, 3129295), (496, 2624570), (520, 2503436), (620, 2099656), (676, 1925720), (806, 1615120), (845, 1540576), (992, 1312285), (1040, 1251718), (1240, 1049828), (1352, 962860), (1553, 838240), (1612, 807560), (1690, 770288), (2015, 646048), (2080, 625859), (2480, 524914), (2704, 481430), (3106, 419120), (3224, 403780), (3380, 385144), (4030, 323024), (4960, 262457), (5239, 248480), (5408, 240715), (6212, 209560), (6448, 201890), (6760, 192572), (7765, 167648), (8060, 161512), (10478, 124240), (12424, 104780), (12896, 100945), (13520, 96286), (15530, 83824), (16120, 80756), (20189, 64480), (20956, 62120), (24848, 52390), (26195, 49696), (27040, 48143), (31060, 41912), (32240, 40378)]