31000905

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 58378320

約数和(自身を除く): 27377415

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 197, 269, 585, 591, 807, 985, 1345, 1773, 2421, 2561, 2955, 3497, 4035, 7683, 8865, 10491, 12105, 12805, 17485, 23049, 31473, 38415, 52455, 52993, 115245, 157365, 158979, 264965, 476937, 688909, 794895, 2066727, 2384685, 3444545, 6200181, 10333635, 31000905]

約数ペア:

[(1, 31000905), (3, 10333635), (5, 6200181), (9, 3444545), (13, 2384685), (15, 2066727), (39, 794895), (45, 688909), (65, 476937), (117, 264965), (195, 158979), (197, 157365), (269, 115245), (585, 52993), (591, 52455), (807, 38415), (985, 31473), (1345, 23049), (1773, 17485), (2421, 12805), (2561, 12105), (2955, 10491), (3497, 8865), (4035, 7683)]