20913795

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2459}}^1$

素因数の和:2486

約数の個数: 48

約数和(自身を含む): 42981120

約数和(自身を除く): 22067325

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2459, 2835, 7377, 8505, 12295, 17213, 22131, 36885, 51639, 66393, 86065, 110655, 154917, 199179, 258195, 331965, 464751, 597537, 774585, 995895, 1394253, 2323755, 2987685, 4182759, 6971265, 20913795]

約数ペア:

[(1, 20913795), (3, 6971265), (5, 4182759), (7, 2987685), (9, 2323755), (15, 1394253), (21, 995895), (27, 774585), (35, 597537), (45, 464751), (63, 331965), (81, 258195), (105, 199179), (135, 154917), (189, 110655), (243, 86065), (315, 66393), (405, 51639), (567, 36885), (945, 22131), (1215, 17213), (1701, 12295), (2459, 8505), (2835, 7377)]