19810406

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:114

約数の個数: 96

約数和(自身を含む): 42550272

約数和(自身を除く): 22739866

約数列:

[1, 2, 7, 11, 14, 17, 22, 23, 34, 46, 47, 49, 77, 94, 98, 119, 154, 161, 187, 238, 253, 322, 329, 374, 391, 506, 517, 539, 658, 782, 799, 833, 1034, 1078, 1081, 1127, 1309, 1598, 1666, 1771, 2162, 2254, 2303, 2618, 2737, 3542, 3619, 4301, 4606, 5474, 5593, 7238, 7567, 8602, 8789, 9163, 11186, 11891, 12397, 15134, 17578, 18326, 18377, 19159, 23782, 24794, 25333, 30107, 36754, 38318, 39151, 50666, 52969, 60214, 61523, 78302, 83237, 105938, 123046, 128639, 166474, 202147, 210749, 257278, 404294, 421498, 430661, 582659, 861322, 900473, 1165318, 1415029, 1800946, 2830058, 9905203, 19810406]

約数ペア:

[(1, 19810406), (2, 9905203), (7, 2830058), (11, 1800946), (14, 1415029), (17, 1165318), (22, 900473), (23, 861322), (34, 582659), (46, 430661), (47, 421498), (49, 404294), (77, 257278), (94, 210749), (98, 202147), (119, 166474), (154, 128639), (161, 123046), (187, 105938), (238, 83237), (253, 78302), (322, 61523), (329, 60214), (374, 52969), (391, 50666), (506, 39151), (517, 38318), (539, 36754), (658, 30107), (782, 25333), (799, 24794), (833, 23782), (1034, 19159), (1078, 18377), (1081, 18326), (1127, 17578), (1309, 15134), (1598, 12397), (1666, 11891), (1771, 11186), (2162, 9163), (2254, 8789), (2303, 8602), (2618, 7567), (2737, 7238), (3542, 5593), (3619, 5474), (4301, 4606)]