19952920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38371}}^1$

素因数の和:38395

約数の個数: 32

約数和(自身を含む): 48348720

約数和(自身を除く): 28395800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38371, 76742, 153484, 191855, 306968, 383710, 498823, 767420, 997646, 1534840, 1995292, 2494115, 3990584, 4988230, 9976460, 19952920]

約数ペア:

[(1, 19952920), (2, 9976460), (4, 4988230), (5, 3990584), (8, 2494115), (10, 1995292), (13, 1534840), (20, 997646), (26, 767420), (40, 498823), (52, 383710), (65, 306968), (104, 191855), (130, 153484), (260, 76742), (520, 38371)]