20911800

素因数分解:

$2^3\times 3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:422

約数の個数: 192

約数和(自身を含む): 79994880

約数和(自身を除く): 59083080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 25, 26, 28, 30, 35, 39, 40, 42, 50, 52, 56, 60, 65, 70, 75, 78, 84, 91, 100, 104, 105, 120, 130, 140, 150, 156, 168, 175, 182, 195, 200, 210, 260, 273, 280, 300, 312, 325, 350, 364, 383, 390, 420, 455, 520, 525, 546, 600, 650, 700, 728, 766, 780, 840, 910, 975, 1050, 1092, 1149, 1300, 1365, 1400, 1532, 1560, 1820, 1915, 1950, 2100, 2184, 2275, 2298, 2600, 2681, 2730, 3064, 3640, 3830, 3900, 4200, 4550, 4596, 4979, 5362, 5460, 5745, 6825, 7660, 7800, 8043, 9100, 9192, 9575, 9958, 10724, 10920, 11490, 13405, 13650, 14937, 15320, 16086, 18200, 19150, 19916, 21448, 22980, 24895, 26810, 27300, 28725, 29874, 32172, 34853, 38300, 39832, 40215, 45960, 49790, 53620, 54600, 57450, 59748, 64344, 67025, 69706, 74685, 76600, 80430, 99580, 104559, 107240, 114900, 119496, 124475, 134050, 139412, 149370, 160860, 174265, 199160, 201075, 209118, 229800, 248950, 268100, 278824, 298740, 321720, 348530, 373425, 402150, 418236, 497900, 522795, 536200, 597480, 697060, 746850, 804300, 836472, 871325, 995800, 1045590, 1394120, 1493700, 1608600, 1742650, 2091180, 2613975, 2987400, 3485300, 4182360, 5227950, 6970600, 10455900, 20911800]

約数ペア:

[(1, 20911800), (2, 10455900), (3, 6970600), (4, 5227950), (5, 4182360), (6, 3485300), (7, 2987400), (8, 2613975), (10, 2091180), (12, 1742650), (13, 1608600), (14, 1493700), (15, 1394120), (20, 1045590), (21, 995800), (24, 871325), (25, 836472), (26, 804300), (28, 746850), (30, 697060), (35, 597480), (39, 536200), (40, 522795), (42, 497900), (50, 418236), (52, 402150), (56, 373425), (60, 348530), (65, 321720), (70, 298740), (75, 278824), (78, 268100), (84, 248950), (91, 229800), (100, 209118), (104, 201075), (105, 199160), (120, 174265), (130, 160860), (140, 149370), (150, 139412), (156, 134050), (168, 124475), (175, 119496), (182, 114900), (195, 107240), (200, 104559), (210, 99580), (260, 80430), (273, 76600), (280, 74685), (300, 69706), (312, 67025), (325, 64344), (350, 59748), (364, 57450), (383, 54600), (390, 53620), (420, 49790), (455, 45960), (520, 40215), (525, 39832), (546, 38300), (600, 34853), (650, 32172), (700, 29874), (728, 28725), (766, 27300), (780, 26810), (840, 24895), (910, 22980), (975, 21448), (1050, 19916), (1092, 19150), (1149, 18200), (1300, 16086), (1365, 15320), (1400, 14937), (1532, 13650), (1560, 13405), (1820, 11490), (1915, 10920), (1950, 10724), (2100, 9958), (2184, 9575), (2275, 9192), (2298, 9100), (2600, 8043), (2681, 7800), (2730, 7660), (3064, 6825), (3640, 5745), (3830, 5460), (3900, 5362), (4200, 4979), (4550, 4596)]