21139020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{883}}^1$

素因数の和:924

約数の個数: 144

約数和(自身を含む): 77226240

約数和(自身を除く): 56087220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 883, 1140, 1197, 1260, 1330, 1596, 1710, 1766, 1995, 2394, 2649, 2660, 3420, 3532, 3990, 4415, 4788, 5298, 5985, 6181, 7947, 7980, 8830, 10596, 11970, 12362, 13245, 15894, 16777, 17660, 18543, 23940, 24724, 26490, 30905, 31788, 33554, 37086, 39735, 50331, 52980, 55629, 61810, 67108, 74172, 79470, 83885, 92715, 100662, 111258, 117439, 123620, 150993, 158940, 167770, 185430, 201324, 222516, 234878, 251655, 278145, 301986, 335540, 352317, 370860, 469756, 503310, 556290, 587195, 603972, 704634, 754965, 1006620, 1056951, 1112580, 1174390, 1409268, 1509930, 1761585, 2113902, 2348780, 3019860, 3523170, 4227804, 5284755, 7046340, 10569510, 21139020]

約数ペア:

[(1, 21139020), (2, 10569510), (3, 7046340), (4, 5284755), (5, 4227804), (6, 3523170), (7, 3019860), (9, 2348780), (10, 2113902), (12, 1761585), (14, 1509930), (15, 1409268), (18, 1174390), (19, 1112580), (20, 1056951), (21, 1006620), (28, 754965), (30, 704634), (35, 603972), (36, 587195), (38, 556290), (42, 503310), (45, 469756), (57, 370860), (60, 352317), (63, 335540), (70, 301986), (76, 278145), (84, 251655), (90, 234878), (95, 222516), (105, 201324), (114, 185430), (126, 167770), (133, 158940), (140, 150993), (171, 123620), (180, 117439), (190, 111258), (210, 100662), (228, 92715), (252, 83885), (266, 79470), (285, 74172), (315, 67108), (342, 61810), (380, 55629), (399, 52980), (420, 50331), (532, 39735), (570, 37086), (630, 33554), (665, 31788), (684, 30905), (798, 26490), (855, 24724), (883, 23940), (1140, 18543), (1197, 17660), (1260, 16777), (1330, 15894), (1596, 13245), (1710, 12362), (1766, 11970), (1995, 10596), (2394, 8830), (2649, 7980), (2660, 7947), (3420, 6181), (3532, 5985), (3990, 5298), (4415, 4788)]