81309660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5273}}^1$

素因数の和:5542

約数の個数: 48

約数和(自身を含む): 228596256

約数和(自身を除く): 147286596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1542, 2570, 3084, 3855, 5140, 5273, 7710, 10546, 15420, 15819, 21092, 26365, 31638, 52730, 63276, 79095, 105460, 158190, 316380, 1355161, 2710322, 4065483, 5420644, 6775805, 8130966, 13551610, 16261932, 20327415, 27103220, 40654830, 81309660]

約数ペア:

[(1, 81309660), (2, 40654830), (3, 27103220), (4, 20327415), (5, 16261932), (6, 13551610), (10, 8130966), (12, 6775805), (15, 5420644), (20, 4065483), (30, 2710322), (60, 1355161), (257, 316380), (514, 158190), (771, 105460), (1028, 79095), (1285, 63276), (1542, 52730), (2570, 31638), (3084, 26365), (3855, 21092), (5140, 15819), (5273, 15420), (7710, 10546)]