678340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2609}}^1$

素因数の和:2631

約数の個数: 24

約数和(自身を含む): 1534680

約数和(自身を除く): 856340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2609, 5218, 10436, 13045, 26090, 33917, 52180, 67834, 135668, 169585, 339170, 678340]

約数ペア:

[(1, 678340), (2, 339170), (4, 169585), (5, 135668), (10, 67834), (13, 52180), (20, 33917), (26, 26090), (52, 13045), (65, 10436), (130, 5218), (260, 2609)]