390367060

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{319973}}^1$

素因数の和:320043

約数の個数: 24

約数和(自身を含む): 833212296

約数和(自身を除く): 442845236

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 319973, 639946, 1279892, 1599865, 3199730, 6399460, 19518353, 39036706, 78073412, 97591765, 195183530, 390367060]

約数ペア:

[(1, 390367060), (2, 195183530), (4, 97591765), (5, 78073412), (10, 39036706), (20, 19518353), (61, 6399460), (122, 3199730), (244, 1599865), (305, 1279892), (610, 639946), (1220, 319973)]