19774020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 66890880

約数和(自身を除く): 47116860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 89, 92, 105, 115, 138, 140, 161, 178, 210, 230, 267, 276, 322, 345, 356, 420, 445, 460, 483, 529, 534, 623, 644, 690, 805, 890, 966, 1058, 1068, 1246, 1335, 1380, 1587, 1610, 1780, 1869, 1932, 2047, 2116, 2415, 2492, 2645, 2670, 3115, 3174, 3220, 3703, 3738, 4094, 4830, 5290, 5340, 6141, 6230, 6348, 7406, 7476, 7935, 8188, 9345, 9660, 10235, 10580, 11109, 12282, 12460, 14329, 14812, 15870, 18515, 18690, 20470, 22218, 24564, 28658, 30705, 31740, 37030, 37380, 40940, 42987, 44436, 47081, 55545, 57316, 61410, 71645, 74060, 85974, 94162, 111090, 122820, 141243, 143290, 171948, 188324, 214935, 222180, 235405, 282486, 286580, 329567, 429870, 470810, 564972, 659134, 706215, 859740, 941620, 988701, 1318268, 1412430, 1647835, 1977402, 2824860, 3295670, 3954804, 4943505, 6591340, 9887010, 19774020]

約数ペア:

[(1, 19774020), (2, 9887010), (3, 6591340), (4, 4943505), (5, 3954804), (6, 3295670), (7, 2824860), (10, 1977402), (12, 1647835), (14, 1412430), (15, 1318268), (20, 988701), (21, 941620), (23, 859740), (28, 706215), (30, 659134), (35, 564972), (42, 470810), (46, 429870), (60, 329567), (69, 286580), (70, 282486), (84, 235405), (89, 222180), (92, 214935), (105, 188324), (115, 171948), (138, 143290), (140, 141243), (161, 122820), (178, 111090), (210, 94162), (230, 85974), (267, 74060), (276, 71645), (322, 61410), (345, 57316), (356, 55545), (420, 47081), (445, 44436), (460, 42987), (483, 40940), (529, 37380), (534, 37030), (623, 31740), (644, 30705), (690, 28658), (805, 24564), (890, 22218), (966, 20470), (1058, 18690), (1068, 18515), (1246, 15870), (1335, 14812), (1380, 14329), (1587, 12460), (1610, 12282), (1780, 11109), (1869, 10580), (1932, 10235), (2047, 9660), (2116, 9345), (2415, 8188), (2492, 7935), (2645, 7476), (2670, 7406), (3115, 6348), (3174, 6230), (3220, 6141), (3703, 5340), (3738, 5290), (4094, 4830)]