21667495

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 7103705

約数列:

[1, 5, 23, 29, 73, 89, 115, 145, 365, 445, 667, 1679, 2047, 2117, 2581, 3335, 6497, 8395, 10235, 10585, 12905, 32485, 48691, 59363, 149431, 188413, 243455, 296815, 747155, 942065, 4333499, 21667495]

約数ペア:

[(1, 21667495), (5, 4333499), (23, 942065), (29, 747155), (73, 296815), (89, 243455), (115, 188413), (145, 149431), (365, 59363), (445, 48691), (667, 32485), (1679, 12905), (2047, 10585), (2117, 10235), (2581, 8395), (3335, 6497)]