73978947

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 131328000

約数和(自身を除く): 57349053

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 71, 111, 149, 189, 213, 259, 333, 447, 497, 639, 777, 999, 1043, 1341, 1491, 1917, 2331, 2627, 3129, 4023, 4473, 5513, 6993, 7881, 9387, 10579, 13419, 16539, 18389, 23643, 28161, 31737, 38591, 49617, 55167, 70929, 74053, 95211, 115773, 148851, 165501, 222159, 285633, 347319, 391423, 496503, 666477, 1041957, 1174269, 1999431, 2739961, 3522807, 8219883, 10568421, 24659649, 73978947]

約数ペア:

[(1, 73978947), (3, 24659649), (7, 10568421), (9, 8219883), (21, 3522807), (27, 2739961), (37, 1999431), (63, 1174269), (71, 1041957), (111, 666477), (149, 496503), (189, 391423), (213, 347319), (259, 285633), (333, 222159), (447, 165501), (497, 148851), (639, 115773), (777, 95211), (999, 74053), (1043, 70929), (1341, 55167), (1491, 49617), (1917, 38591), (2331, 31737), (2627, 28161), (3129, 23643), (4023, 18389), (4473, 16539), (5513, 13419), (6993, 10579), (7881, 9387)]