19975120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22699}}^1$

素因数の和:22723

約数の個数: 40

約数和(自身を含む): 50666400

約数和(自身を除く): 30691280

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22699, 45398, 90796, 113495, 181592, 226990, 249689, 363184, 453980, 499378, 907960, 998756, 1248445, 1815920, 1997512, 2496890, 3995024, 4993780, 9987560, 19975120]

約数ペア:

[(1, 19975120), (2, 9987560), (4, 4993780), (5, 3995024), (8, 2496890), (10, 1997512), (11, 1815920), (16, 1248445), (20, 998756), (22, 907960), (40, 499378), (44, 453980), (55, 363184), (80, 249689), (88, 226990), (110, 181592), (176, 113495), (220, 90796), (440, 45398), (880, 22699)]