25439841

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{401}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 45152640

約数和(自身を除く): 19712799

約数列:

[1, 3, 7, 9, 19, 21, 53, 57, 63, 133, 159, 171, 371, 399, 401, 477, 1007, 1113, 1197, 1203, 2807, 3021, 3339, 3609, 7049, 7619, 8421, 9063, 21147, 21253, 22857, 25263, 53333, 63441, 63759, 68571, 148771, 159999, 191277, 403807, 446313, 479997, 1211421, 1338939, 2826649, 3634263, 8479947, 25439841]

約数ペア:

[(1, 25439841), (3, 8479947), (7, 3634263), (9, 2826649), (19, 1338939), (21, 1211421), (53, 479997), (57, 446313), (63, 403807), (133, 191277), (159, 159999), (171, 148771), (371, 68571), (399, 63759), (401, 63441), (477, 53333), (1007, 25263), (1113, 22857), (1197, 21253), (1203, 21147), (2807, 9063), (3021, 8421), (3339, 7619), (3609, 7049)]