20808515553

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1\times {\mathrm{1061}}^1$

素因数の和:1454

約数の個数: 64

約数和(自身を含む): 32944361472

約数和(自身を除く): 12135845919

約数列:

[1, 3, 7, 21, 53, 67, 159, 201, 263, 371, 469, 789, 1061, 1113, 1407, 1841, 3183, 3551, 5523, 7427, 10653, 13939, 17621, 22281, 24857, 41817, 52863, 56233, 71087, 74571, 97573, 123347, 168699, 213261, 279043, 292719, 370041, 393631, 497609, 837129, 933913, 1180893, 1492827, 1953301, 2801739, 3767611, 5859903, 6537391, 11302833, 14789279, 18695881, 19612173, 26373277, 44367837, 56087643, 79119831, 103524953, 130871167, 310574859, 392613501, 990881693, 2972645079, 6936171851, 20808515553]

約数ペア:

[(1, 20808515553), (3, 6936171851), (7, 2972645079), (21, 990881693), (53, 392613501), (67, 310574859), (159, 130871167), (201, 103524953), (263, 79119831), (371, 56087643), (469, 44367837), (789, 26373277), (1061, 19612173), (1113, 18695881), (1407, 14789279), (1841, 11302833), (3183, 6537391), (3551, 5859903), (5523, 3767611), (7427, 2801739), (10653, 1953301), (13939, 1492827), (17621, 1180893), (22281, 933913), (24857, 837129), (41817, 497609), (52863, 393631), (56233, 370041), (71087, 292719), (74571, 279043), (97573, 213261), (123347, 168699)]