78840440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{293}}^1$

素因数の和:373

約数の個数: 96

約数和(自身を含む): 210198240

約数和(自身を除く): 131357800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 293, 310, 434, 586, 620, 868, 961, 1085, 1172, 1240, 1465, 1736, 1922, 2051, 2170, 2344, 2930, 3844, 4102, 4340, 4805, 5860, 6727, 7688, 8204, 8680, 9083, 9610, 10255, 11720, 13454, 16408, 18166, 19220, 20510, 26908, 33635, 36332, 38440, 41020, 45415, 53816, 63581, 67270, 72664, 82040, 90830, 127162, 134540, 181660, 254324, 269080, 281573, 317905, 363320, 508648, 563146, 635810, 1126292, 1271620, 1407865, 1971011, 2252584, 2543240, 2815730, 3942022, 5631460, 7884044, 9855055, 11262920, 15768088, 19710110, 39420220, 78840440]

約数ペア:

[(1, 78840440), (2, 39420220), (4, 19710110), (5, 15768088), (7, 11262920), (8, 9855055), (10, 7884044), (14, 5631460), (20, 3942022), (28, 2815730), (31, 2543240), (35, 2252584), (40, 1971011), (56, 1407865), (62, 1271620), (70, 1126292), (124, 635810), (140, 563146), (155, 508648), (217, 363320), (248, 317905), (280, 281573), (293, 269080), (310, 254324), (434, 181660), (586, 134540), (620, 127162), (868, 90830), (961, 82040), (1085, 72664), (1172, 67270), (1240, 63581), (1465, 53816), (1736, 45415), (1922, 41020), (2051, 38440), (2170, 36332), (2344, 33635), (2930, 26908), (3844, 20510), (4102, 19220), (4340, 18166), (4805, 16408), (5860, 13454), (6727, 11720), (7688, 10255), (8204, 9610), (8680, 9083)]