31379920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{211}}^1$

素因数の和:261

約数の個数: 120

約数和(自身を含む): 86592672

約数和(自身を除く): 55212752

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 169, 176, 208, 211, 220, 260, 286, 338, 422, 440, 520, 572, 676, 715, 844, 845, 880, 1040, 1055, 1144, 1352, 1430, 1688, 1690, 1859, 2110, 2288, 2321, 2704, 2743, 2860, 3376, 3380, 3718, 4220, 4642, 5486, 5720, 6760, 7436, 8440, 9284, 9295, 10972, 11440, 11605, 13520, 13715, 14872, 16880, 18568, 18590, 21944, 23210, 27430, 29744, 30173, 35659, 37136, 37180, 43888, 46420, 54860, 60346, 71318, 74360, 92840, 109720, 120692, 142636, 148720, 150865, 178295, 185680, 219440, 241384, 285272, 301730, 356590, 392249, 482768, 570544, 603460, 713180, 784498, 1206920, 1426360, 1568996, 1961245, 2413840, 2852720, 3137992, 3922490, 6275984, 7844980, 15689960, 31379920]

約数ペア:

[(1, 31379920), (2, 15689960), (4, 7844980), (5, 6275984), (8, 3922490), (10, 3137992), (11, 2852720), (13, 2413840), (16, 1961245), (20, 1568996), (22, 1426360), (26, 1206920), (40, 784498), (44, 713180), (52, 603460), (55, 570544), (65, 482768), (80, 392249), (88, 356590), (104, 301730), (110, 285272), (130, 241384), (143, 219440), (169, 185680), (176, 178295), (208, 150865), (211, 148720), (220, 142636), (260, 120692), (286, 109720), (338, 92840), (422, 74360), (440, 71318), (520, 60346), (572, 54860), (676, 46420), (715, 43888), (844, 37180), (845, 37136), (880, 35659), (1040, 30173), (1055, 29744), (1144, 27430), (1352, 23210), (1430, 21944), (1688, 18590), (1690, 18568), (1859, 16880), (2110, 14872), (2288, 13715), (2321, 13520), (2704, 11605), (2743, 11440), (2860, 10972), (3376, 9295), (3380, 9284), (3718, 8440), (4220, 7436), (4642, 6760), (5486, 5720)]