19964280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23767}}^1$

素因数の和:23788

約数の個数: 64

約数和(自身を含む): 68451840

約数和(自身を除く): 48487560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23767, 47534, 71301, 95068, 118835, 142602, 166369, 190136, 237670, 285204, 332738, 356505, 475340, 499107, 570408, 665476, 713010, 831845, 950680, 998214, 1330952, 1426020, 1663690, 1996428, 2495535, 2852040, 3327380, 3992856, 4991070, 6654760, 9982140, 19964280]

約数ペア:

[(1, 19964280), (2, 9982140), (3, 6654760), (4, 4991070), (5, 3992856), (6, 3327380), (7, 2852040), (8, 2495535), (10, 1996428), (12, 1663690), (14, 1426020), (15, 1330952), (20, 998214), (21, 950680), (24, 831845), (28, 713010), (30, 665476), (35, 570408), (40, 499107), (42, 475340), (56, 356505), (60, 332738), (70, 285204), (84, 237670), (105, 190136), (120, 166369), (140, 142602), (168, 118835), (210, 95068), (280, 71301), (420, 47534), (840, 23767)]