81041440

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16339}}^1$

素因数の和:16385

約数の個数: 48

約数和(自身を含む): 197648640

約数和(自身を除く): 116607200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 16339, 32678, 65356, 81695, 130712, 163390, 261424, 326780, 506509, 522848, 653560, 1013018, 1307120, 2026036, 2532545, 2614240, 4052072, 5065090, 8104144, 10130180, 16208288, 20260360, 40520720, 81041440]

約数ペア:

[(1, 81041440), (2, 40520720), (4, 20260360), (5, 16208288), (8, 10130180), (10, 8104144), (16, 5065090), (20, 4052072), (31, 2614240), (32, 2532545), (40, 2026036), (62, 1307120), (80, 1013018), (124, 653560), (155, 522848), (160, 506509), (248, 326780), (310, 261424), (496, 163390), (620, 130712), (992, 81695), (1240, 65356), (2480, 32678), (4960, 16339)]