21809340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{911}}^1$

素因数の和:952

約数の個数: 144

約数和(自身を含む): 79672320

約数和(自身を除く): 57862980

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, 911, 1140, 1197, 1260, 1330, 1596, 1710, 1822, 1995, 2394, 2660, 2733, 3420, 3644, 3990, 4555, 4788, 5466, 5985, 6377, 7980, 8199, 9110, 10932, 11970, 12754, 13665, 16398, 17309, 18220, 19131, 23940, 25508, 27330, 31885, 32796, 34618, 38262, 40995, 51927, 54660, 57393, 63770, 69236, 76524, 81990, 86545, 95655, 103854, 114786, 121163, 127540, 155781, 163980, 173090, 191310, 207708, 229572, 242326, 259635, 286965, 311562, 346180, 363489, 382620, 484652, 519270, 573930, 605815, 623124, 726978, 778905, 1038540, 1090467, 1147860, 1211630, 1453956, 1557810, 1817445, 2180934, 2423260, 3115620, 3634890, 4361868, 5452335, 7269780, 10904670, 21809340]

約数ペア:

[(1, 21809340), (2, 10904670), (3, 7269780), (4, 5452335), (5, 4361868), (6, 3634890), (7, 3115620), (9, 2423260), (10, 2180934), (12, 1817445), (14, 1557810), (15, 1453956), (18, 1211630), (19, 1147860), (20, 1090467), (21, 1038540), (28, 778905), (30, 726978), (35, 623124), (36, 605815), (38, 573930), (42, 519270), (45, 484652), (57, 382620), (60, 363489), (63, 346180), (70, 311562), (76, 286965), (84, 259635), (90, 242326), (95, 229572), (105, 207708), (114, 191310), (126, 173090), (133, 163980), (140, 155781), (171, 127540), (180, 121163), (190, 114786), (210, 103854), (228, 95655), (252, 86545), (266, 81990), (285, 76524), (315, 69236), (342, 63770), (380, 57393), (399, 54660), (420, 51927), (532, 40995), (570, 38262), (630, 34618), (665, 32796), (684, 31885), (798, 27330), (855, 25508), (911, 23940), (1140, 19131), (1197, 18220), (1260, 17309), (1330, 16398), (1596, 13665), (1710, 12754), (1822, 11970), (1995, 10932), (2394, 9110), (2660, 8199), (2733, 7980), (3420, 6377), (3644, 5985), (3990, 5466), (4555, 4788)]