21620060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 57576960

約数和(自身を除く): 35956900

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 101, 110, 139, 140, 154, 202, 220, 278, 308, 385, 404, 505, 556, 695, 707, 770, 973, 1010, 1111, 1390, 1414, 1529, 1540, 1946, 2020, 2222, 2780, 2828, 3058, 3535, 3892, 4444, 4865, 5555, 6116, 7070, 7645, 7777, 9730, 10703, 11110, 14039, 14140, 15290, 15554, 19460, 21406, 22220, 28078, 30580, 31108, 38885, 42812, 53515, 56156, 70195, 77770, 98273, 107030, 140390, 154429, 155540, 196546, 214060, 280780, 308858, 393092, 491365, 617716, 772145, 982730, 1081003, 1544290, 1965460, 2162006, 3088580, 4324012, 5405015, 10810030, 21620060]

約数ペア:

[(1, 21620060), (2, 10810030), (4, 5405015), (5, 4324012), (7, 3088580), (10, 2162006), (11, 1965460), (14, 1544290), (20, 1081003), (22, 982730), (28, 772145), (35, 617716), (44, 491365), (55, 393092), (70, 308858), (77, 280780), (101, 214060), (110, 196546), (139, 155540), (140, 154429), (154, 140390), (202, 107030), (220, 98273), (278, 77770), (308, 70195), (385, 56156), (404, 53515), (505, 42812), (556, 38885), (695, 31108), (707, 30580), (770, 28078), (973, 22220), (1010, 21406), (1111, 19460), (1390, 15554), (1414, 15290), (1529, 14140), (1540, 14039), (1946, 11110), (2020, 10703), (2222, 9730), (2780, 7777), (2828, 7645), (3058, 7070), (3535, 6116), (3892, 5555), (4444, 4865)]