28121940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2029}}^1$

素因数の和:2062

約数の個数: 144

約数和(自身を含む): 106404480

約数和(自身を除く): 78282540

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, 1540, 1980, 2029, 2310, 2772, 3465, 4058, 4620, 6087, 6930, 8116, 10145, 12174, 13860, 14203, 18261, 20290, 22319, 24348, 28406, 30435, 36522, 40580, 42609, 44638, 56812, 60870, 66957, 71015, 73044, 85218, 89276, 91305, 111595, 121740, 127827, 133914, 142030, 156233, 170436, 182610, 200871, 213045, 223190, 255654, 267828, 284060, 312466, 334785, 365220, 401742, 426090, 446380, 468699, 511308, 624932, 639135, 669570, 781165, 803484, 852180, 937398, 1004355, 1278270, 1339140, 1406097, 1562330, 1874796, 2008710, 2343495, 2556540, 2812194, 3124660, 4017420, 4686990, 5624388, 7030485, 9373980, 14060970, 28121940]

約数ペア:

[(1, 28121940), (2, 14060970), (3, 9373980), (4, 7030485), (5, 5624388), (6, 4686990), (7, 4017420), (9, 3124660), (10, 2812194), (11, 2556540), (12, 2343495), (14, 2008710), (15, 1874796), (18, 1562330), (20, 1406097), (21, 1339140), (22, 1278270), (28, 1004355), (30, 937398), (33, 852180), (35, 803484), (36, 781165), (42, 669570), (44, 639135), (45, 624932), (55, 511308), (60, 468699), (63, 446380), (66, 426090), (70, 401742), (77, 365220), (84, 334785), (90, 312466), (99, 284060), (105, 267828), (110, 255654), (126, 223190), (132, 213045), (140, 200871), (154, 182610), (165, 170436), (180, 156233), (198, 142030), (210, 133914), (220, 127827), (231, 121740), (252, 111595), (308, 91305), (315, 89276), (330, 85218), (385, 73044), (396, 71015), (420, 66957), (462, 60870), (495, 56812), (630, 44638), (660, 42609), (693, 40580), (770, 36522), (924, 30435), (990, 28406), (1155, 24348), (1260, 22319), (1386, 20290), (1540, 18261), (1980, 14203), (2029, 13860), (2310, 12174), (2772, 10145), (3465, 8116), (4058, 6930), (4620, 6087)]