81446380

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 174283200

約数和(自身を除く): 92836820

約数列:

[1, 2, 4, 5, 10, 20, 149, 151, 181, 298, 302, 362, 596, 604, 724, 745, 755, 905, 1490, 1510, 1810, 2980, 3020, 3620, 22499, 26969, 27331, 44998, 53938, 54662, 89996, 107876, 109324, 112495, 134845, 136655, 224990, 269690, 273310, 449980, 539380, 546620, 4072319, 8144638, 16289276, 20361595, 40723190, 81446380]

約数ペア:

[(1, 81446380), (2, 40723190), (4, 20361595), (5, 16289276), (10, 8144638), (20, 4072319), (149, 546620), (151, 539380), (181, 449980), (298, 273310), (302, 269690), (362, 224990), (596, 136655), (604, 134845), (724, 112495), (745, 109324), (755, 107876), (905, 89996), (1490, 54662), (1510, 53938), (1810, 44998), (2980, 27331), (3020, 26969), (3620, 22499)]