21395673

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 36481536

約数和(自身を除く): 15085863

約数列:

[1, 3, 9, 13, 17, 31, 39, 51, 93, 117, 153, 221, 279, 347, 403, 527, 663, 1041, 1209, 1581, 1989, 3123, 3627, 4511, 4743, 5899, 6851, 10757, 13533, 17697, 20553, 32271, 40599, 53091, 61659, 76687, 96813, 139841, 182869, 230061, 419523, 548607, 690183, 1258569, 1645821, 2377297, 7131891, 21395673]

約数ペア:

[(1, 21395673), (3, 7131891), (9, 2377297), (13, 1645821), (17, 1258569), (31, 690183), (39, 548607), (51, 419523), (93, 230061), (117, 182869), (153, 139841), (221, 96813), (279, 76687), (347, 61659), (403, 53091), (527, 40599), (663, 32271), (1041, 20553), (1209, 17697), (1581, 13533), (1989, 10757), (3123, 6851), (3627, 5899), (4511, 4743)]