138728720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:401

約数の個数: 120

約数和(自身を含む): 361619712

約数和(自身を除く): 222890992

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 169, 208, 248, 260, 310, 331, 338, 403, 496, 520, 620, 662, 676, 806, 845, 1040, 1240, 1324, 1352, 1612, 1655, 1690, 2015, 2480, 2648, 2704, 3224, 3310, 3380, 4030, 4303, 5239, 5296, 6448, 6620, 6760, 8060, 8606, 10261, 10478, 13240, 13520, 16120, 17212, 20522, 20956, 21515, 26195, 26480, 32240, 34424, 41044, 41912, 43030, 51305, 52390, 55939, 68848, 82088, 83824, 86060, 102610, 104780, 111878, 133393, 164176, 172120, 205220, 209560, 223756, 266786, 279695, 344240, 410440, 419120, 447512, 533572, 559390, 666965, 820880, 895024, 1067144, 1118780, 1333930, 1734109, 2134288, 2237560, 2667860, 3468218, 4475120, 5335720, 6936436, 8670545, 10671440, 13872872, 17341090, 27745744, 34682180, 69364360, 138728720]

約数ペア:

[(1, 138728720), (2, 69364360), (4, 34682180), (5, 27745744), (8, 17341090), (10, 13872872), (13, 10671440), (16, 8670545), (20, 6936436), (26, 5335720), (31, 4475120), (40, 3468218), (52, 2667860), (62, 2237560), (65, 2134288), (80, 1734109), (104, 1333930), (124, 1118780), (130, 1067144), (155, 895024), (169, 820880), (208, 666965), (248, 559390), (260, 533572), (310, 447512), (331, 419120), (338, 410440), (403, 344240), (496, 279695), (520, 266786), (620, 223756), (662, 209560), (676, 205220), (806, 172120), (845, 164176), (1040, 133393), (1240, 111878), (1324, 104780), (1352, 102610), (1612, 86060), (1655, 83824), (1690, 82088), (2015, 68848), (2480, 55939), (2648, 52390), (2704, 51305), (3224, 43030), (3310, 41912), (3380, 41044), (4030, 34424), (4303, 32240), (5239, 26480), (5296, 26195), (6448, 21515), (6620, 20956), (6760, 20522), (8060, 17212), (8606, 16120), (10261, 13520), (10478, 13240)]