64378340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247609}}^1$

素因数の和:247631

約数の個数: 24

約数和(自身を含む): 145594680

約数和(自身を除く): 81216340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 247609, 495218, 990436, 1238045, 2476090, 3218917, 4952180, 6437834, 12875668, 16094585, 32189170, 64378340]

約数ペア:

[(1, 64378340), (2, 32189170), (4, 16094585), (5, 12875668), (10, 6437834), (13, 4952180), (20, 3218917), (26, 2476090), (52, 1238045), (65, 990436), (130, 495218), (260, 247609)]