51340240

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{1871}}^1$

素因数の和:1905

約数の個数: 80

約数和(自身を含む): 139276800

約数和(自身を除く): 87936560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1871, 1960, 2744, 3430, 3742, 3920, 5488, 6860, 7484, 9355, 13097, 13720, 14968, 18710, 26194, 27440, 29936, 37420, 52388, 65485, 74840, 91679, 104776, 130970, 149680, 183358, 209552, 261940, 366716, 458395, 523880, 641753, 733432, 916790, 1047760, 1283506, 1466864, 1833580, 2567012, 3208765, 3667160, 5134024, 6417530, 7334320, 10268048, 12835060, 25670120, 51340240]

約数ペア:

[(1, 51340240), (2, 25670120), (4, 12835060), (5, 10268048), (7, 7334320), (8, 6417530), (10, 5134024), (14, 3667160), (16, 3208765), (20, 2567012), (28, 1833580), (35, 1466864), (40, 1283506), (49, 1047760), (56, 916790), (70, 733432), (80, 641753), (98, 523880), (112, 458395), (140, 366716), (196, 261940), (245, 209552), (280, 183358), (343, 149680), (392, 130970), (490, 104776), (560, 91679), (686, 74840), (784, 65485), (980, 52388), (1372, 37420), (1715, 29936), (1871, 27440), (1960, 26194), (2744, 18710), (3430, 14968), (3742, 13720), (3920, 13097), (5488, 9355), (6860, 7484)]