21409545

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{743}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 36640512

約数和(自身を除く): 15230967

約数列:

[1, 3, 5, 15, 17, 51, 85, 113, 255, 339, 565, 743, 1695, 1921, 2229, 3715, 5763, 9605, 11145, 12631, 28815, 37893, 63155, 83959, 189465, 251877, 419795, 1259385, 1427303, 4281909, 7136515, 21409545]

約数ペア:

[(1, 21409545), (3, 7136515), (5, 4281909), (15, 1427303), (17, 1259385), (51, 419795), (85, 251877), (113, 189465), (255, 83959), (339, 63155), (565, 37893), (743, 28815), (1695, 12631), (1921, 11145), (2229, 9605), (3715, 5763)]