19764220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1787}}^1$

素因数の和:1882

約数の個数: 48

約数和(自身を含む): 48061440

約数和(自身を除く): 28297220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 1787, 2212, 2765, 3574, 5530, 7148, 8935, 11060, 12509, 17870, 25018, 35740, 50036, 62545, 125090, 141173, 250180, 282346, 564692, 705865, 988211, 1411730, 1976422, 2823460, 3952844, 4941055, 9882110, 19764220]

約数ペア:

[(1, 19764220), (2, 9882110), (4, 4941055), (5, 3952844), (7, 2823460), (10, 1976422), (14, 1411730), (20, 988211), (28, 705865), (35, 564692), (70, 282346), (79, 250180), (140, 141173), (158, 125090), (316, 62545), (395, 50036), (553, 35740), (790, 25018), (1106, 17870), (1580, 12509), (1787, 11060), (2212, 8935), (2765, 7148), (3574, 5530)]