18910920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:547

約数の個数: 128

約数和(自身を含む): 66355200

約数和(自身を除く): 47444280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 47, 56, 60, 70, 84, 94, 105, 120, 140, 141, 168, 188, 210, 235, 280, 282, 329, 376, 420, 470, 479, 564, 658, 705, 840, 940, 958, 987, 1128, 1316, 1410, 1437, 1645, 1880, 1916, 1974, 2395, 2632, 2820, 2874, 3290, 3353, 3832, 3948, 4790, 4935, 5640, 5748, 6580, 6706, 7185, 7896, 9580, 9870, 10059, 11496, 13160, 13412, 14370, 16765, 19160, 19740, 20118, 22513, 26824, 28740, 33530, 39480, 40236, 45026, 50295, 57480, 67060, 67539, 80472, 90052, 100590, 112565, 134120, 135078, 157591, 180104, 201180, 225130, 270156, 315182, 337695, 402360, 450260, 472773, 540312, 630364, 675390, 787955, 900520, 945546, 1260728, 1350780, 1575910, 1891092, 2363865, 2701560, 3151820, 3782184, 4727730, 6303640, 9455460, 18910920]

約数ペア:

[(1, 18910920), (2, 9455460), (3, 6303640), (4, 4727730), (5, 3782184), (6, 3151820), (7, 2701560), (8, 2363865), (10, 1891092), (12, 1575910), (14, 1350780), (15, 1260728), (20, 945546), (21, 900520), (24, 787955), (28, 675390), (30, 630364), (35, 540312), (40, 472773), (42, 450260), (47, 402360), (56, 337695), (60, 315182), (70, 270156), (84, 225130), (94, 201180), (105, 180104), (120, 157591), (140, 135078), (141, 134120), (168, 112565), (188, 100590), (210, 90052), (235, 80472), (280, 67539), (282, 67060), (329, 57480), (376, 50295), (420, 45026), (470, 40236), (479, 39480), (564, 33530), (658, 28740), (705, 26824), (840, 22513), (940, 20118), (958, 19740), (987, 19160), (1128, 16765), (1316, 14370), (1410, 13412), (1437, 13160), (1645, 11496), (1880, 10059), (1916, 9870), (1974, 9580), (2395, 7896), (2632, 7185), (2820, 6706), (2874, 6580), (3290, 5748), (3353, 5640), (3832, 4935), (3948, 4790)]