20571139960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{18661}}^1$

素因数の和:18837

約数の個数: 128

約数和(自身を含む): 55036477440

約数和(自身を除く): 34465337480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 127, 140, 155, 217, 248, 254, 280, 310, 434, 508, 620, 635, 868, 889, 1016, 1085, 1240, 1270, 1736, 1778, 2170, 2540, 3556, 3937, 4340, 4445, 5080, 7112, 7874, 8680, 8890, 15748, 17780, 18661, 19685, 27559, 31496, 35560, 37322, 39370, 55118, 74644, 78740, 93305, 110236, 130627, 137795, 149288, 157480, 186610, 220472, 261254, 275590, 373220, 522508, 551180, 578491, 653135, 746440, 1045016, 1102360, 1156982, 1306270, 2313964, 2369947, 2612540, 2892455, 4049437, 4627928, 4739894, 5225080, 5784910, 8098874, 9479788, 11569820, 11849735, 16197748, 16589629, 18959576, 20247185, 23139640, 23699470, 32395496, 33179258, 40494370, 47398940, 66358516, 73468357, 80988740, 82948145, 94797880, 132717032, 146936714, 161977480, 165896290, 293873428, 331792580, 367341785, 514278499, 587746856, 663585160, 734683570, 1028556998, 1469367140, 2057113996, 2571392495, 2938734280, 4114227992, 5142784990, 10285569980, 20571139960]

約数ペア:

[(1, 20571139960), (2, 10285569980), (4, 5142784990), (5, 4114227992), (7, 2938734280), (8, 2571392495), (10, 2057113996), (14, 1469367140), (20, 1028556998), (28, 734683570), (31, 663585160), (35, 587746856), (40, 514278499), (56, 367341785), (62, 331792580), (70, 293873428), (124, 165896290), (127, 161977480), (140, 146936714), (155, 132717032), (217, 94797880), (248, 82948145), (254, 80988740), (280, 73468357), (310, 66358516), (434, 47398940), (508, 40494370), (620, 33179258), (635, 32395496), (868, 23699470), (889, 23139640), (1016, 20247185), (1085, 18959576), (1240, 16589629), (1270, 16197748), (1736, 11849735), (1778, 11569820), (2170, 9479788), (2540, 8098874), (3556, 5784910), (3937, 5225080), (4340, 4739894), (4445, 4627928), (5080, 4049437), (7112, 2892455), (7874, 2612540), (8680, 2369947), (8890, 2313964), (15748, 1306270), (17780, 1156982), (18661, 1102360), (19685, 1045016), (27559, 746440), (31496, 653135), (35560, 578491), (37322, 551180), (39370, 522508), (55118, 373220), (74644, 275590), (78740, 261254), (93305, 220472), (110236, 186610), (130627, 157480), (137795, 149288)]