28187820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1051}}^1$

素因数の和:1215

約数の個数: 72

約数和(自身を含む): 86158800

約数和(自身を除く): 57970980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 745, 894, 1051, 1341, 1490, 1788, 2102, 2235, 2682, 2980, 3153, 4204, 4470, 5255, 5364, 6306, 6705, 8940, 9459, 10510, 12612, 13410, 15765, 18918, 21020, 26820, 31530, 37836, 47295, 63060, 94590, 156599, 189180, 313198, 469797, 626396, 782995, 939594, 1409391, 1565990, 1879188, 2348985, 2818782, 3131980, 4697970, 5637564, 7046955, 9395940, 14093910, 28187820]

約数ペア:

[(1, 28187820), (2, 14093910), (3, 9395940), (4, 7046955), (5, 5637564), (6, 4697970), (9, 3131980), (10, 2818782), (12, 2348985), (15, 1879188), (18, 1565990), (20, 1409391), (30, 939594), (36, 782995), (45, 626396), (60, 469797), (90, 313198), (149, 189180), (180, 156599), (298, 94590), (447, 63060), (596, 47295), (745, 37836), (894, 31530), (1051, 26820), (1341, 21020), (1490, 18918), (1788, 15765), (2102, 13410), (2235, 12612), (2682, 10510), (2980, 9459), (3153, 8940), (4204, 6705), (4470, 6306), (5255, 5364)]