20804497924

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{687343}}^1$

素因数の和:687424

約数の個数: 48

約数和(自身を含む): 44341936128

約数和(自身を除く): 23537438204

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 47, 92, 94, 161, 188, 322, 329, 644, 658, 1081, 1316, 2162, 4324, 7567, 15134, 30268, 687343, 1374686, 2749372, 4811401, 9622802, 15808889, 19245604, 31617778, 32305121, 63235556, 64610242, 110662223, 129220484, 221324446, 226135847, 442648892, 452271694, 743017783, 904543388, 1486035566, 2972071132, 5201124481, 10402248962, 20804497924]

約数ペア:

[(1, 20804497924), (2, 10402248962), (4, 5201124481), (7, 2972071132), (14, 1486035566), (23, 904543388), (28, 743017783), (46, 452271694), (47, 442648892), (92, 226135847), (94, 221324446), (161, 129220484), (188, 110662223), (322, 64610242), (329, 63235556), (644, 32305121), (658, 31617778), (1081, 19245604), (1316, 15808889), (2162, 9622802), (4324, 4811401), (7567, 2749372), (15134, 1374686), (30268, 687343)]