643688495

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1609}}^1$

素因数の和:1763

約数の個数: 32

約数和(自身を含む): 834624000

約数和(自身を除く): 190935505

約数列:

[1, 5, 29, 31, 89, 145, 155, 445, 899, 1609, 2581, 2759, 4495, 8045, 12905, 13795, 46661, 49879, 80011, 143201, 233305, 249395, 400055, 716005, 1446491, 4152829, 4439231, 7232455, 20764145, 22196155, 128737699, 643688495]

約数ペア:

[(1, 643688495), (5, 128737699), (29, 22196155), (31, 20764145), (89, 7232455), (145, 4439231), (155, 4152829), (445, 1446491), (899, 716005), (1609, 400055), (2581, 249395), (2759, 233305), (4495, 143201), (8045, 80011), (12905, 49879), (13795, 46661)]