19702620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:864

約数の個数: 144

約数和(自身を含む): 71984640

約数和(自身を除く): 52282020

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, 823, 855, 1140, 1197, 1260, 1330, 1596, 1646, 1710, 1995, 2394, 2469, 2660, 3292, 3420, 3990, 4115, 4788, 4938, 5761, 5985, 7407, 7980, 8230, 9876, 11522, 11970, 12345, 14814, 15637, 16460, 17283, 23044, 23940, 24690, 28805, 29628, 31274, 34566, 37035, 46911, 49380, 51849, 57610, 62548, 69132, 74070, 78185, 86415, 93822, 103698, 109459, 115220, 140733, 148140, 156370, 172830, 187644, 207396, 218918, 234555, 259245, 281466, 312740, 328377, 345660, 437836, 469110, 518490, 547295, 562932, 656754, 703665, 938220, 985131, 1036980, 1094590, 1313508, 1407330, 1641885, 1970262, 2189180, 2814660, 3283770, 3940524, 4925655, 6567540, 9851310, 19702620]

約数ペア:

[(1, 19702620), (2, 9851310), (3, 6567540), (4, 4925655), (5, 3940524), (6, 3283770), (7, 2814660), (9, 2189180), (10, 1970262), (12, 1641885), (14, 1407330), (15, 1313508), (18, 1094590), (19, 1036980), (20, 985131), (21, 938220), (28, 703665), (30, 656754), (35, 562932), (36, 547295), (38, 518490), (42, 469110), (45, 437836), (57, 345660), (60, 328377), (63, 312740), (70, 281466), (76, 259245), (84, 234555), (90, 218918), (95, 207396), (105, 187644), (114, 172830), (126, 156370), (133, 148140), (140, 140733), (171, 115220), (180, 109459), (190, 103698), (210, 93822), (228, 86415), (252, 78185), (266, 74070), (285, 69132), (315, 62548), (342, 57610), (380, 51849), (399, 49380), (420, 46911), (532, 37035), (570, 34566), (630, 31274), (665, 29628), (684, 28805), (798, 24690), (823, 23940), (855, 23044), (1140, 17283), (1197, 16460), (1260, 15637), (1330, 14814), (1596, 12345), (1646, 11970), (1710, 11522), (1995, 9876), (2394, 8230), (2469, 7980), (2660, 7407), (3292, 5985), (3420, 5761), (3990, 4938), (4115, 4788)]