21619620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 73120320

約数和(自身を除く): 51500700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 61, 66, 90, 99, 110, 122, 132, 165, 179, 180, 183, 198, 220, 244, 305, 330, 358, 366, 396, 495, 537, 549, 610, 660, 671, 716, 732, 895, 915, 990, 1074, 1098, 1220, 1342, 1611, 1790, 1830, 1969, 1980, 2013, 2148, 2196, 2684, 2685, 2745, 3222, 3355, 3580, 3660, 3938, 4026, 5370, 5490, 5907, 6039, 6444, 6710, 7876, 8052, 8055, 9845, 10065, 10740, 10919, 10980, 11814, 12078, 13420, 16110, 17721, 19690, 20130, 21838, 23628, 24156, 29535, 30195, 32220, 32757, 35442, 39380, 40260, 43676, 54595, 59070, 60390, 65514, 70884, 88605, 98271, 109190, 118140, 120109, 120780, 131028, 163785, 177210, 196542, 218380, 240218, 327570, 354420, 360327, 393084, 480436, 491355, 600545, 655140, 720654, 982710, 1080981, 1201090, 1441308, 1801635, 1965420, 2161962, 2402180, 3603270, 4323924, 5404905, 7206540, 10809810, 21619620]

約数ペア:

[(1, 21619620), (2, 10809810), (3, 7206540), (4, 5404905), (5, 4323924), (6, 3603270), (9, 2402180), (10, 2161962), (11, 1965420), (12, 1801635), (15, 1441308), (18, 1201090), (20, 1080981), (22, 982710), (30, 720654), (33, 655140), (36, 600545), (44, 491355), (45, 480436), (55, 393084), (60, 360327), (61, 354420), (66, 327570), (90, 240218), (99, 218380), (110, 196542), (122, 177210), (132, 163785), (165, 131028), (179, 120780), (180, 120109), (183, 118140), (198, 109190), (220, 98271), (244, 88605), (305, 70884), (330, 65514), (358, 60390), (366, 59070), (396, 54595), (495, 43676), (537, 40260), (549, 39380), (610, 35442), (660, 32757), (671, 32220), (716, 30195), (732, 29535), (895, 24156), (915, 23628), (990, 21838), (1074, 20130), (1098, 19690), (1220, 17721), (1342, 16110), (1611, 13420), (1790, 12078), (1830, 11814), (1969, 10980), (1980, 10919), (2013, 10740), (2148, 10065), (2196, 9845), (2684, 8055), (2685, 8052), (2745, 7876), (3222, 6710), (3355, 6444), (3580, 6039), (3660, 5907), (3938, 5490), (4026, 5370)]