261777840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17881}}^1$

素因数の和:17958

約数の個数: 80

約数和(自身を含む): 824860896

約数和(自身を除く): 563083056

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1464, 1830, 2440, 2928, 3660, 4880, 7320, 14640, 17881, 35762, 53643, 71524, 89405, 107286, 143048, 178810, 214572, 268215, 286096, 357620, 429144, 536430, 715240, 858288, 1072860, 1090741, 1430480, 2145720, 2181482, 3272223, 4291440, 4362964, 5453705, 6544446, 8725928, 10907410, 13088892, 16361115, 17451856, 21814820, 26177784, 32722230, 43629640, 52355568, 65444460, 87259280, 130888920, 261777840]

約数ペア:

[(1, 261777840), (2, 130888920), (3, 87259280), (4, 65444460), (5, 52355568), (6, 43629640), (8, 32722230), (10, 26177784), (12, 21814820), (15, 17451856), (16, 16361115), (20, 13088892), (24, 10907410), (30, 8725928), (40, 6544446), (48, 5453705), (60, 4362964), (61, 4291440), (80, 3272223), (120, 2181482), (122, 2145720), (183, 1430480), (240, 1090741), (244, 1072860), (305, 858288), (366, 715240), (488, 536430), (610, 429144), (732, 357620), (915, 286096), (976, 268215), (1220, 214572), (1464, 178810), (1830, 143048), (2440, 107286), (2928, 89405), (3660, 71524), (4880, 53643), (7320, 35762), (14640, 17881)]