20827760

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1873}}^1$

素因数の和:2025

約数の個数: 40

約数和(自身を含む): 48798960

約数和(自身を除く): 27971200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1873, 2224, 2780, 3746, 5560, 7492, 9365, 11120, 14984, 18730, 29968, 37460, 74920, 149840, 260347, 520694, 1041388, 1301735, 2082776, 2603470, 4165552, 5206940, 10413880, 20827760]

約数ペア:

[(1, 20827760), (2, 10413880), (4, 5206940), (5, 4165552), (8, 2603470), (10, 2082776), (16, 1301735), (20, 1041388), (40, 520694), (80, 260347), (139, 149840), (278, 74920), (556, 37460), (695, 29968), (1112, 18730), (1390, 14984), (1873, 11120), (2224, 9365), (2780, 7492), (3746, 5560)]