21487272

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 56263680

約数和(自身を除く): 34776408

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 47, 86, 94, 129, 141, 172, 188, 258, 282, 344, 376, 443, 516, 564, 886, 1032, 1128, 1329, 1772, 2021, 2658, 3544, 4042, 5316, 6063, 8084, 10632, 12126, 16168, 19049, 20821, 24252, 38098, 41642, 48504, 57147, 62463, 76196, 83284, 114294, 124926, 152392, 166568, 228588, 249852, 457176, 499704, 895303, 1790606, 2685909, 3581212, 5371818, 7162424, 10743636, 21487272]

約数ペア:

[(1, 21487272), (2, 10743636), (3, 7162424), (4, 5371818), (6, 3581212), (8, 2685909), (12, 1790606), (24, 895303), (43, 499704), (47, 457176), (86, 249852), (94, 228588), (129, 166568), (141, 152392), (172, 124926), (188, 114294), (258, 83284), (282, 76196), (344, 62463), (376, 57147), (443, 48504), (516, 41642), (564, 38098), (886, 24252), (1032, 20821), (1128, 19049), (1329, 16168), (1772, 12126), (2021, 10632), (2658, 8084), (3544, 6063), (4042, 5316)]