20978064

素因数分解:

$2^4\times 3^2\times {\mathrm{145681}}^1$

素因数の和:145695

約数の個数: 30

約数和(自身を含む): 58709846

約数和(自身を除く): 37731782

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 145681, 291362, 437043, 582724, 874086, 1165448, 1311129, 1748172, 2330896, 2622258, 3496344, 5244516, 6992688, 10489032, 20978064]

約数ペア:

[(1, 20978064), (2, 10489032), (3, 6992688), (4, 5244516), (6, 3496344), (8, 2622258), (9, 2330896), (12, 1748172), (16, 1311129), (18, 1165448), (24, 874086), (36, 582724), (48, 437043), (72, 291362), (144, 145681)]