21850020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{941}}^1$

素因数の和:1002

約数の個数: 96

約数和(自身を含む): 69632640

約数和(自身を除く): 47782620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 86, 90, 108, 129, 135, 172, 180, 215, 258, 270, 387, 430, 516, 540, 645, 774, 860, 941, 1161, 1290, 1548, 1882, 1935, 2322, 2580, 2823, 3764, 3870, 4644, 4705, 5646, 5805, 7740, 8469, 9410, 11292, 11610, 14115, 16938, 18820, 23220, 25407, 28230, 33876, 40463, 42345, 50814, 56460, 80926, 84690, 101628, 121389, 127035, 161852, 169380, 202315, 242778, 254070, 364167, 404630, 485556, 508140, 606945, 728334, 809260, 1092501, 1213890, 1456668, 1820835, 2185002, 2427780, 3641670, 4370004, 5462505, 7283340, 10925010, 21850020]

約数ペア:

[(1, 21850020), (2, 10925010), (3, 7283340), (4, 5462505), (5, 4370004), (6, 3641670), (9, 2427780), (10, 2185002), (12, 1820835), (15, 1456668), (18, 1213890), (20, 1092501), (27, 809260), (30, 728334), (36, 606945), (43, 508140), (45, 485556), (54, 404630), (60, 364167), (86, 254070), (90, 242778), (108, 202315), (129, 169380), (135, 161852), (172, 127035), (180, 121389), (215, 101628), (258, 84690), (270, 80926), (387, 56460), (430, 50814), (516, 42345), (540, 40463), (645, 33876), (774, 28230), (860, 25407), (941, 23220), (1161, 18820), (1290, 16938), (1548, 14115), (1882, 11610), (1935, 11292), (2322, 9410), (2580, 8469), (2823, 7740), (3764, 5805), (3870, 5646), (4644, 4705)]