28695380

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:166

約数の個数: 96

約数和(自身を含む): 72576000

約数和(自身を除く): 43880620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 89, 94, 98, 140, 178, 188, 196, 235, 245, 329, 343, 356, 445, 470, 490, 623, 658, 686, 890, 940, 980, 1246, 1316, 1372, 1645, 1715, 1780, 2303, 2492, 3115, 3290, 3430, 4183, 4361, 4606, 6230, 6580, 6860, 8366, 8722, 9212, 11515, 12460, 16121, 16732, 17444, 20915, 21805, 23030, 29281, 30527, 32242, 41830, 43610, 46060, 58562, 61054, 64484, 80605, 83660, 87220, 117124, 122108, 146405, 152635, 161210, 204967, 292810, 305270, 322420, 409934, 585620, 610540, 819868, 1024835, 1434769, 2049670, 2869538, 4099340, 5739076, 7173845, 14347690, 28695380]

約数ペア:

[(1, 28695380), (2, 14347690), (4, 7173845), (5, 5739076), (7, 4099340), (10, 2869538), (14, 2049670), (20, 1434769), (28, 1024835), (35, 819868), (47, 610540), (49, 585620), (70, 409934), (89, 322420), (94, 305270), (98, 292810), (140, 204967), (178, 161210), (188, 152635), (196, 146405), (235, 122108), (245, 117124), (329, 87220), (343, 83660), (356, 80605), (445, 64484), (470, 61054), (490, 58562), (623, 46060), (658, 43610), (686, 41830), (890, 32242), (940, 30527), (980, 29281), (1246, 23030), (1316, 21805), (1372, 20915), (1645, 17444), (1715, 16732), (1780, 16121), (2303, 12460), (2492, 11515), (3115, 9212), (3290, 8722), (3430, 8366), (4183, 6860), (4361, 6580), (4606, 6230)]