8990420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{401}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 20260800

約数和(自身を除く): 11270380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 401, 590, 802, 1121, 1180, 1604, 2005, 2242, 4010, 4484, 5605, 7619, 8020, 11210, 15238, 22420, 23659, 30476, 38095, 47318, 76190, 94636, 118295, 152380, 236590, 449521, 473180, 899042, 1798084, 2247605, 4495210, 8990420]

約数ペア:

[(1, 8990420), (2, 4495210), (4, 2247605), (5, 1798084), (10, 899042), (19, 473180), (20, 449521), (38, 236590), (59, 152380), (76, 118295), (95, 94636), (118, 76190), (190, 47318), (236, 38095), (295, 30476), (380, 23659), (401, 22420), (590, 15238), (802, 11210), (1121, 8020), (1180, 7619), (1604, 5605), (2005, 4484), (2242, 4010)]