18871440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 160

約数和(自身を含む): 68567040

約数和(自身を除く): 49695600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 47, 48, 56, 60, 70, 80, 84, 94, 105, 112, 120, 140, 141, 168, 188, 210, 235, 239, 240, 280, 282, 329, 336, 376, 420, 470, 478, 560, 564, 658, 705, 717, 752, 840, 940, 956, 987, 1128, 1195, 1316, 1410, 1434, 1645, 1673, 1680, 1880, 1912, 1974, 2256, 2390, 2632, 2820, 2868, 3290, 3346, 3585, 3760, 3824, 3948, 4780, 4935, 5019, 5264, 5640, 5736, 6580, 6692, 7170, 7896, 8365, 9560, 9870, 10038, 11233, 11280, 11472, 13160, 13384, 14340, 15792, 16730, 19120, 19740, 20076, 22466, 25095, 26320, 26768, 28680, 33460, 33699, 39480, 40152, 44932, 50190, 56165, 57360, 66920, 67398, 78631, 78960, 80304, 89864, 100380, 112330, 133840, 134796, 157262, 168495, 179728, 200760, 224660, 235893, 269592, 314524, 336990, 393155, 401520, 449320, 471786, 539184, 629048, 673980, 786310, 898640, 943572, 1179465, 1258096, 1347960, 1572620, 1887144, 2358930, 2695920, 3145240, 3774288, 4717860, 6290480, 9435720, 18871440]

約数ペア:

[(1, 18871440), (2, 9435720), (3, 6290480), (4, 4717860), (5, 3774288), (6, 3145240), (7, 2695920), (8, 2358930), (10, 1887144), (12, 1572620), (14, 1347960), (15, 1258096), (16, 1179465), (20, 943572), (21, 898640), (24, 786310), (28, 673980), (30, 629048), (35, 539184), (40, 471786), (42, 449320), (47, 401520), (48, 393155), (56, 336990), (60, 314524), (70, 269592), (80, 235893), (84, 224660), (94, 200760), (105, 179728), (112, 168495), (120, 157262), (140, 134796), (141, 133840), (168, 112330), (188, 100380), (210, 89864), (235, 80304), (239, 78960), (240, 78631), (280, 67398), (282, 66920), (329, 57360), (336, 56165), (376, 50190), (420, 44932), (470, 40152), (478, 39480), (560, 33699), (564, 33460), (658, 28680), (705, 26768), (717, 26320), (752, 25095), (840, 22466), (940, 20076), (956, 19740), (987, 19120), (1128, 16730), (1195, 15792), (1316, 14340), (1410, 13384), (1434, 13160), (1645, 11472), (1673, 11280), (1680, 11233), (1880, 10038), (1912, 9870), (1974, 9560), (2256, 8365), (2390, 7896), (2632, 7170), (2820, 6692), (2868, 6580), (3290, 5736), (3346, 5640), (3585, 5264), (3760, 5019), (3824, 4935), (3948, 4780)]