390554780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{253607}}^1$

素因数の和:253634

約数の個数: 48

約数和(自身を含む): 1022547456

約数和(自身を除く): 631992676

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 253607, 507214, 1014428, 1268035, 1775249, 2536070, 2789677, 3550498, 5072140, 5579354, 7100996, 8876245, 11158708, 13948385, 17752490, 19527739, 27896770, 35504980, 39055478, 55793540, 78110956, 97638695, 195277390, 390554780]

約数ペア:

[(1, 390554780), (2, 195277390), (4, 97638695), (5, 78110956), (7, 55793540), (10, 39055478), (11, 35504980), (14, 27896770), (20, 19527739), (22, 17752490), (28, 13948385), (35, 11158708), (44, 8876245), (55, 7100996), (70, 5579354), (77, 5072140), (110, 3550498), (140, 2789677), (154, 2536070), (220, 1775249), (308, 1268035), (385, 1014428), (770, 507214), (1540, 253607)]