20147647856

素因数分解:

$2^4\times 7^1\times {\mathrm{1277}}^1\times {\mathrm{140869}}^1$

素因数の和:142161

約数の個数: 40

約数和(自身を含む): 44647901280

約数和(自身を除く): 24500253424

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 1277, 2554, 5108, 8939, 10216, 17878, 20432, 35756, 71512, 140869, 143024, 281738, 563476, 986083, 1126952, 1972166, 2253904, 3944332, 7888664, 15777328, 179889713, 359779426, 719558852, 1259227991, 1439117704, 2518455982, 2878235408, 5036911964, 10073823928, 20147647856]

約数ペア:

[(1, 20147647856), (2, 10073823928), (4, 5036911964), (7, 2878235408), (8, 2518455982), (14, 1439117704), (16, 1259227991), (28, 719558852), (56, 359779426), (112, 179889713), (1277, 15777328), (2554, 7888664), (5108, 3944332), (8939, 2253904), (10216, 1972166), (17878, 1126952), (20432, 986083), (35756, 563476), (71512, 281738), (140869, 143024)]