81409140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4391}}^1$

素因数の和:4509

約数の個数: 72

約数和(自身を含む): 249395328

約数和(自身を除く): 167986188

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1236, 1545, 1854, 2060, 3090, 3708, 4391, 4635, 6180, 8782, 9270, 13173, 17564, 18540, 21955, 26346, 39519, 43910, 52692, 65865, 79038, 87820, 131730, 158076, 197595, 263460, 395190, 452273, 790380, 904546, 1356819, 1809092, 2261365, 2713638, 4070457, 4522730, 5427276, 6784095, 8140914, 9045460, 13568190, 16281828, 20352285, 27136380, 40704570, 81409140]

約数ペア:

[(1, 81409140), (2, 40704570), (3, 27136380), (4, 20352285), (5, 16281828), (6, 13568190), (9, 9045460), (10, 8140914), (12, 6784095), (15, 5427276), (18, 4522730), (20, 4070457), (30, 2713638), (36, 2261365), (45, 1809092), (60, 1356819), (90, 904546), (103, 790380), (180, 452273), (206, 395190), (309, 263460), (412, 197595), (515, 158076), (618, 131730), (927, 87820), (1030, 79038), (1236, 65865), (1545, 52692), (1854, 43910), (2060, 39519), (3090, 26346), (3708, 21955), (4391, 18540), (4635, 17564), (6180, 13173), (8782, 9270)]