20984936

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 50232960

約数和(自身を除く): 29248024

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 47, 49, 56, 67, 68, 94, 98, 119, 134, 136, 188, 196, 238, 268, 329, 376, 392, 469, 476, 536, 658, 799, 833, 938, 952, 1139, 1316, 1598, 1666, 1876, 2278, 2303, 2632, 3149, 3196, 3283, 3332, 3752, 4556, 4606, 5593, 6298, 6392, 6566, 6664, 7973, 9112, 9212, 11186, 12596, 13132, 15946, 18424, 22043, 22372, 25192, 26264, 31892, 39151, 44086, 44744, 53533, 55811, 63784, 78302, 88172, 107066, 111622, 154301, 156604, 176344, 214132, 223244, 308602, 313208, 374731, 428264, 446488, 617204, 749462, 1234408, 1498924, 2623117, 2997848, 5246234, 10492468, 20984936]

約数ペア:

[(1, 20984936), (2, 10492468), (4, 5246234), (7, 2997848), (8, 2623117), (14, 1498924), (17, 1234408), (28, 749462), (34, 617204), (47, 446488), (49, 428264), (56, 374731), (67, 313208), (68, 308602), (94, 223244), (98, 214132), (119, 176344), (134, 156604), (136, 154301), (188, 111622), (196, 107066), (238, 88172), (268, 78302), (329, 63784), (376, 55811), (392, 53533), (469, 44744), (476, 44086), (536, 39151), (658, 31892), (799, 26264), (833, 25192), (938, 22372), (952, 22043), (1139, 18424), (1316, 15946), (1598, 13132), (1666, 12596), (1876, 11186), (2278, 9212), (2303, 9112), (2632, 7973), (3149, 6664), (3196, 6566), (3283, 6392), (3332, 6298), (3752, 5593), (4556, 4606)]