1640221700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{15971}}^1$

素因数の和:16077

約数の個数: 72

約数和(自身を含む): 3881834880

約数和(自身を除く): 2241613180

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 79, 100, 130, 158, 260, 316, 325, 395, 650, 790, 1027, 1300, 1580, 1975, 2054, 3950, 4108, 5135, 7900, 10270, 15971, 20540, 25675, 31942, 51350, 63884, 79855, 102700, 159710, 207623, 319420, 399275, 415246, 798550, 830492, 1038115, 1261709, 1597100, 2076230, 2523418, 4152460, 5046836, 5190575, 6308545, 10381150, 12617090, 16402217, 20762300, 25234180, 31542725, 32804434, 63085450, 65608868, 82011085, 126170900, 164022170, 328044340, 410055425, 820110850, 1640221700]

約数ペア:

[(1, 1640221700), (2, 820110850), (4, 410055425), (5, 328044340), (10, 164022170), (13, 126170900), (20, 82011085), (25, 65608868), (26, 63085450), (50, 32804434), (52, 31542725), (65, 25234180), (79, 20762300), (100, 16402217), (130, 12617090), (158, 10381150), (260, 6308545), (316, 5190575), (325, 5046836), (395, 4152460), (650, 2523418), (790, 2076230), (1027, 1597100), (1300, 1261709), (1580, 1038115), (1975, 830492), (2054, 798550), (3950, 415246), (4108, 399275), (5135, 319420), (7900, 207623), (10270, 159710), (15971, 102700), (20540, 79855), (25675, 63884), (31942, 51350)]