21264535

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 7506665

約数列:

[1, 5, 17, 23, 73, 85, 115, 149, 365, 391, 745, 1241, 1679, 1955, 2533, 3427, 6205, 8395, 10877, 12665, 17135, 28543, 54385, 58259, 142715, 184909, 250171, 291295, 924545, 1250855, 4252907, 21264535]

約数ペア:

[(1, 21264535), (5, 4252907), (17, 1250855), (23, 924545), (73, 291295), (85, 250171), (115, 184909), (149, 142715), (365, 58259), (391, 54385), (745, 28543), (1241, 17135), (1679, 12665), (1955, 10877), (2533, 8395), (3427, 6205)]