1290761960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{311}}^1$

素因数の和:511

約数の個数: 128

約数和(自身を含む): 3162931200

約数和(自身を除く): 1872169240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 127, 152, 172, 190, 215, 254, 311, 344, 380, 430, 508, 622, 635, 760, 817, 860, 1016, 1244, 1270, 1555, 1634, 1720, 2413, 2488, 2540, 3110, 3268, 4085, 4826, 5080, 5461, 5909, 6220, 6536, 8170, 9652, 10922, 11818, 12065, 12440, 13373, 16340, 19304, 21844, 23636, 24130, 26746, 27305, 29545, 32680, 39497, 43688, 47272, 48260, 53492, 54610, 59090, 66865, 78994, 96520, 103759, 106984, 109220, 118180, 133730, 157988, 197485, 207518, 218440, 236360, 254087, 267460, 315976, 394970, 415036, 508174, 518795, 534920, 750443, 789940, 830072, 1016348, 1037590, 1270435, 1500886, 1579880, 1698371, 2032696, 2075180, 2540870, 3001772, 3396742, 3752215, 4150360, 5081740, 6003544, 6793484, 7504430, 8491855, 10163480, 13586968, 15008860, 16983710, 30017720, 32269049, 33967420, 64538098, 67934840, 129076196, 161345245, 258152392, 322690490, 645380980, 1290761960]

約数ペア:

[(1, 1290761960), (2, 645380980), (4, 322690490), (5, 258152392), (8, 161345245), (10, 129076196), (19, 67934840), (20, 64538098), (38, 33967420), (40, 32269049), (43, 30017720), (76, 16983710), (86, 15008860), (95, 13586968), (127, 10163480), (152, 8491855), (172, 7504430), (190, 6793484), (215, 6003544), (254, 5081740), (311, 4150360), (344, 3752215), (380, 3396742), (430, 3001772), (508, 2540870), (622, 2075180), (635, 2032696), (760, 1698371), (817, 1579880), (860, 1500886), (1016, 1270435), (1244, 1037590), (1270, 1016348), (1555, 830072), (1634, 789940), (1720, 750443), (2413, 534920), (2488, 518795), (2540, 508174), (3110, 415036), (3268, 394970), (4085, 315976), (4826, 267460), (5080, 254087), (5461, 236360), (5909, 218440), (6220, 207518), (6536, 197485), (8170, 157988), (9652, 133730), (10922, 118180), (11818, 109220), (12065, 106984), (12440, 103759), (13373, 96520), (16340, 78994), (19304, 66865), (21844, 59090), (23636, 54610), (24130, 53492), (26746, 48260), (27305, 47272), (29545, 43688), (32680, 39497)]