821639005

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{431}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 1141765632

約数和(自身を除く): 320126627

約数列:

[1, 5, 11, 23, 55, 115, 121, 137, 253, 431, 605, 685, 1265, 1507, 2155, 2783, 3151, 4741, 7535, 9913, 13915, 15755, 16577, 23705, 34661, 49565, 52151, 59047, 82885, 109043, 173305, 260755, 295235, 381271, 545215, 649517, 1199473, 1358081, 1906355, 3247585, 5997365, 6790405, 7144687, 14938891, 35723435, 74694455, 164327801, 821639005]

約数ペア:

[(1, 821639005), (5, 164327801), (11, 74694455), (23, 35723435), (55, 14938891), (115, 7144687), (121, 6790405), (137, 5997365), (253, 3247585), (431, 1906355), (605, 1358081), (685, 1199473), (1265, 649517), (1507, 545215), (2155, 381271), (2783, 295235), (3151, 260755), (4741, 173305), (7535, 109043), (9913, 82885), (13915, 59047), (15755, 52151), (16577, 49565), (23705, 34661)]