81621477

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 139431552

約数和(自身を除く): 57810075

約数列:

[1, 3, 7, 9, 21, 61, 63, 67, 183, 201, 317, 427, 469, 549, 603, 951, 1281, 1407, 2219, 2853, 3843, 4087, 4221, 6657, 12261, 19337, 19971, 21239, 28609, 36783, 58011, 63717, 85827, 135359, 148673, 174033, 191151, 257481, 406077, 446019, 1218231, 1295579, 1338057, 3886737, 9069053, 11660211, 27207159, 81621477]

約数ペア:

[(1, 81621477), (3, 27207159), (7, 11660211), (9, 9069053), (21, 3886737), (61, 1338057), (63, 1295579), (67, 1218231), (183, 446019), (201, 406077), (317, 257481), (427, 191151), (469, 174033), (549, 148673), (603, 135359), (951, 85827), (1281, 63717), (1407, 58011), (2219, 36783), (2853, 28609), (3843, 21239), (4087, 19971), (4221, 19337), (6657, 12261)]