21830060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{739}}^1$

素因数の和:966

約数の個数: 48

約数和(自身を含む): 52711680

約数和(自身を除く): 30881620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 739, 844, 1055, 1477, 1478, 2110, 2954, 2956, 3695, 4220, 5173, 5908, 7385, 7390, 10346, 14770, 14780, 20692, 25865, 29540, 51730, 103460, 155929, 311858, 623716, 779645, 1091503, 1559290, 2183006, 3118580, 4366012, 5457515, 10915030, 21830060]

約数ペア:

[(1, 21830060), (2, 10915030), (4, 5457515), (5, 4366012), (7, 3118580), (10, 2183006), (14, 1559290), (20, 1091503), (28, 779645), (35, 623716), (70, 311858), (140, 155929), (211, 103460), (422, 51730), (739, 29540), (844, 25865), (1055, 20692), (1477, 14780), (1478, 14770), (2110, 10346), (2954, 7390), (2956, 7385), (3695, 5908), (4220, 5173)]