278642980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:242

約数の個数: 192

約数和(自身を含む): 783820800

約数和(自身を除く): 505177820

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 89, 95, 107, 110, 133, 140, 154, 178, 190, 209, 214, 220, 266, 308, 356, 380, 385, 418, 428, 445, 532, 535, 623, 665, 749, 770, 836, 890, 979, 1045, 1070, 1177, 1246, 1330, 1463, 1498, 1540, 1691, 1780, 1958, 2033, 2090, 2140, 2354, 2492, 2660, 2926, 2996, 3115, 3382, 3745, 3916, 4066, 4180, 4708, 4895, 5852, 5885, 6230, 6764, 6853, 7315, 7490, 8132, 8239, 8455, 9523, 9790, 10165, 11770, 11837, 12460, 13706, 14231, 14630, 14980, 16478, 16910, 18601, 19046, 19580, 20330, 22363, 23540, 23674, 27412, 28462, 29260, 32956, 33820, 34265, 37202, 38092, 40660, 41195, 44726, 47348, 47615, 56924, 59185, 66661, 68530, 71155, 74404, 82390, 89452, 93005, 95230, 104753, 111815, 118370, 130207, 133322, 137060, 142310, 156541, 164780, 180937, 186010, 190460, 209506, 223630, 236740, 260414, 266644, 284620, 313082, 333305, 361874, 372020, 419012, 447260, 520828, 523765, 626164, 651035, 666610, 723748, 733271, 782705, 904685, 1047530, 1266559, 1302070, 1333220, 1466542, 1565410, 1809370, 1990307, 2095060, 2533118, 2604140, 2933084, 3130820, 3618740, 3666355, 3980614, 5066236, 6332795, 7332710, 7961228, 9951535, 12665590, 13932149, 14665420, 19903070, 25331180, 27864298, 39806140, 55728596, 69660745, 139321490, 278642980]

約数ペア:

[(1, 278642980), (2, 139321490), (4, 69660745), (5, 55728596), (7, 39806140), (10, 27864298), (11, 25331180), (14, 19903070), (19, 14665420), (20, 13932149), (22, 12665590), (28, 9951535), (35, 7961228), (38, 7332710), (44, 6332795), (55, 5066236), (70, 3980614), (76, 3666355), (77, 3618740), (89, 3130820), (95, 2933084), (107, 2604140), (110, 2533118), (133, 2095060), (140, 1990307), (154, 1809370), (178, 1565410), (190, 1466542), (209, 1333220), (214, 1302070), (220, 1266559), (266, 1047530), (308, 904685), (356, 782705), (380, 733271), (385, 723748), (418, 666610), (428, 651035), (445, 626164), (532, 523765), (535, 520828), (623, 447260), (665, 419012), (749, 372020), (770, 361874), (836, 333305), (890, 313082), (979, 284620), (1045, 266644), (1070, 260414), (1177, 236740), (1246, 223630), (1330, 209506), (1463, 190460), (1498, 186010), (1540, 180937), (1691, 164780), (1780, 156541), (1958, 142310), (2033, 137060), (2090, 133322), (2140, 130207), (2354, 118370), (2492, 111815), (2660, 104753), (2926, 95230), (2996, 93005), (3115, 89452), (3382, 82390), (3745, 74404), (3916, 71155), (4066, 68530), (4180, 66661), (4708, 59185), (4895, 56924), (5852, 47615), (5885, 47348), (6230, 44726), (6764, 41195), (6853, 40660), (7315, 38092), (7490, 37202), (8132, 34265), (8239, 33820), (8455, 32956), (9523, 29260), (9790, 28462), (10165, 27412), (11770, 23674), (11837, 23540), (12460, 22363), (13706, 20330), (14231, 19580), (14630, 19046), (14980, 18601), (16478, 16910)]