261982240

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:315

約数の個数: 192

約数和(自身を含む): 731566080

約数和(自身を除く): 469583840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 31, 32, 34, 40, 52, 62, 65, 68, 80, 85, 104, 124, 130, 136, 155, 160, 170, 208, 221, 239, 248, 260, 272, 310, 340, 403, 416, 442, 478, 496, 520, 527, 544, 620, 680, 806, 884, 956, 992, 1040, 1054, 1105, 1195, 1240, 1360, 1612, 1768, 1912, 2015, 2080, 2108, 2210, 2390, 2480, 2635, 2720, 3107, 3224, 3536, 3824, 4030, 4063, 4216, 4420, 4780, 4960, 5270, 6214, 6448, 6851, 7072, 7409, 7648, 8060, 8126, 8432, 8840, 9560, 10540, 12428, 12896, 13702, 14818, 15535, 16120, 16252, 16864, 17680, 19120, 20315, 21080, 24856, 27404, 29636, 31070, 32240, 32504, 34255, 35360, 37045, 38240, 40630, 42160, 49712, 52819, 54808, 59272, 62140, 64480, 65008, 68510, 74090, 81260, 84320, 96317, 99424, 105638, 109616, 118544, 124280, 125953, 130016, 137020, 148180, 162520, 192634, 211276, 219232, 237088, 248560, 251906, 264095, 274040, 296360, 325040, 385268, 422552, 481585, 497120, 503812, 528190, 548080, 592720, 629765, 650080, 770536, 845104, 963170, 1007624, 1056380, 1096160, 1185440, 1259530, 1541072, 1637389, 1690208, 1926340, 2015248, 2112760, 2519060, 3082144, 3274778, 3852680, 4030496, 4225520, 5038120, 6549556, 7705360, 8186945, 8451040, 10076240, 13099112, 15410720, 16373890, 20152480, 26198224, 32747780, 52396448, 65495560, 130991120, 261982240]

約数ペア:

[(1, 261982240), (2, 130991120), (4, 65495560), (5, 52396448), (8, 32747780), (10, 26198224), (13, 20152480), (16, 16373890), (17, 15410720), (20, 13099112), (26, 10076240), (31, 8451040), (32, 8186945), (34, 7705360), (40, 6549556), (52, 5038120), (62, 4225520), (65, 4030496), (68, 3852680), (80, 3274778), (85, 3082144), (104, 2519060), (124, 2112760), (130, 2015248), (136, 1926340), (155, 1690208), (160, 1637389), (170, 1541072), (208, 1259530), (221, 1185440), (239, 1096160), (248, 1056380), (260, 1007624), (272, 963170), (310, 845104), (340, 770536), (403, 650080), (416, 629765), (442, 592720), (478, 548080), (496, 528190), (520, 503812), (527, 497120), (544, 481585), (620, 422552), (680, 385268), (806, 325040), (884, 296360), (956, 274040), (992, 264095), (1040, 251906), (1054, 248560), (1105, 237088), (1195, 219232), (1240, 211276), (1360, 192634), (1612, 162520), (1768, 148180), (1912, 137020), (2015, 130016), (2080, 125953), (2108, 124280), (2210, 118544), (2390, 109616), (2480, 105638), (2635, 99424), (2720, 96317), (3107, 84320), (3224, 81260), (3536, 74090), (3824, 68510), (4030, 65008), (4063, 64480), (4216, 62140), (4420, 59272), (4780, 54808), (4960, 52819), (5270, 49712), (6214, 42160), (6448, 40630), (6851, 38240), (7072, 37045), (7409, 35360), (7648, 34255), (8060, 32504), (8126, 32240), (8432, 31070), (8840, 29636), (9560, 27404), (10540, 24856), (12428, 21080), (12896, 20315), (13702, 19120), (14818, 17680), (15535, 16864), (16120, 16252)]