81386820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26597}}^1$

素因数の和:26629

約数の個数: 72

約数和(自身を含む): 261405144

約数和(自身を除く): 180018324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 26597, 53194, 79791, 106388, 132985, 159582, 239373, 265970, 319164, 398955, 452149, 478746, 531940, 797910, 904298, 957492, 1196865, 1356447, 1595820, 1808596, 2260745, 2393730, 2712894, 4069341, 4521490, 4787460, 5425788, 6782235, 8138682, 9042980, 13564470, 16277364, 20346705, 27128940, 40693410, 81386820]

約数ペア:

[(1, 81386820), (2, 40693410), (3, 27128940), (4, 20346705), (5, 16277364), (6, 13564470), (9, 9042980), (10, 8138682), (12, 6782235), (15, 5425788), (17, 4787460), (18, 4521490), (20, 4069341), (30, 2712894), (34, 2393730), (36, 2260745), (45, 1808596), (51, 1595820), (60, 1356447), (68, 1196865), (85, 957492), (90, 904298), (102, 797910), (153, 531940), (170, 478746), (180, 452149), (204, 398955), (255, 319164), (306, 265970), (340, 239373), (510, 159582), (612, 132985), (765, 106388), (1020, 79791), (1530, 53194), (3060, 26597)]