21664695

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{461}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 37566144

約数和(自身を除く): 15901449

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 241, 461, 723, 1205, 1383, 2305, 3133, 3615, 5993, 6915, 9399, 15665, 17979, 29965, 46995, 89895, 111101, 333303, 555505, 1444313, 1666515, 4332939, 7221565, 21664695]

約数ペア:

[(1, 21664695), (3, 7221565), (5, 4332939), (13, 1666515), (15, 1444313), (39, 555505), (65, 333303), (195, 111101), (241, 89895), (461, 46995), (723, 29965), (1205, 17979), (1383, 15665), (2305, 9399), (3133, 6915), (3615, 5993)]