21219660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1531}}^1$

素因数の和:1564

約数の個数: 144

約数和(自身を含む): 80301312

約数和(自身を除く): 59081652

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1531, 1540, 1980, 2310, 2772, 3062, 3465, 4593, 4620, 6124, 6930, 7655, 9186, 10717, 13779, 13860, 15310, 16841, 18372, 21434, 22965, 27558, 30620, 32151, 33682, 42868, 45930, 50523, 53585, 55116, 64302, 67364, 68895, 84205, 91860, 96453, 101046, 107170, 117887, 128604, 137790, 151569, 160755, 168410, 192906, 202092, 214340, 235774, 252615, 275580, 303138, 321510, 336820, 353661, 385812, 471548, 482265, 505230, 589435, 606276, 643020, 707322, 757845, 964530, 1010460, 1060983, 1178870, 1414644, 1515690, 1768305, 1929060, 2121966, 2357740, 3031380, 3536610, 4243932, 5304915, 7073220, 10609830, 21219660]

約数ペア:

[(1, 21219660), (2, 10609830), (3, 7073220), (4, 5304915), (5, 4243932), (6, 3536610), (7, 3031380), (9, 2357740), (10, 2121966), (11, 1929060), (12, 1768305), (14, 1515690), (15, 1414644), (18, 1178870), (20, 1060983), (21, 1010460), (22, 964530), (28, 757845), (30, 707322), (33, 643020), (35, 606276), (36, 589435), (42, 505230), (44, 482265), (45, 471548), (55, 385812), (60, 353661), (63, 336820), (66, 321510), (70, 303138), (77, 275580), (84, 252615), (90, 235774), (99, 214340), (105, 202092), (110, 192906), (126, 168410), (132, 160755), (140, 151569), (154, 137790), (165, 128604), (180, 117887), (198, 107170), (210, 101046), (220, 96453), (231, 91860), (252, 84205), (308, 68895), (315, 67364), (330, 64302), (385, 55116), (396, 53585), (420, 50523), (462, 45930), (495, 42868), (630, 33682), (660, 32151), (693, 30620), (770, 27558), (924, 22965), (990, 21434), (1155, 18372), (1260, 16841), (1386, 15310), (1531, 13860), (1540, 13779), (1980, 10717), (2310, 9186), (2772, 7655), (3062, 6930), (3465, 6124), (4593, 4620)]