21528828

素因数分解:

$2^2\times 3^7\times {\mathrm{23}}^1\times {\mathrm{107}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 59512320

約数和(自身を除く): 37983492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 27, 36, 46, 54, 69, 81, 92, 107, 108, 138, 162, 207, 214, 243, 276, 321, 324, 414, 428, 486, 621, 642, 729, 828, 963, 972, 1242, 1284, 1458, 1863, 1926, 2187, 2461, 2484, 2889, 2916, 3726, 3852, 4374, 4922, 5589, 5778, 7383, 7452, 8667, 8748, 9844, 11178, 11556, 14766, 16767, 17334, 22149, 22356, 26001, 29532, 33534, 34668, 44298, 50301, 52002, 66447, 67068, 78003, 88596, 100602, 104004, 132894, 156006, 199341, 201204, 234009, 265788, 312012, 398682, 468018, 598023, 797364, 936036, 1196046, 1794069, 2392092, 3588138, 5382207, 7176276, 10764414, 21528828]

約数ペア:

[(1, 21528828), (2, 10764414), (3, 7176276), (4, 5382207), (6, 3588138), (9, 2392092), (12, 1794069), (18, 1196046), (23, 936036), (27, 797364), (36, 598023), (46, 468018), (54, 398682), (69, 312012), (81, 265788), (92, 234009), (107, 201204), (108, 199341), (138, 156006), (162, 132894), (207, 104004), (214, 100602), (243, 88596), (276, 78003), (321, 67068), (324, 66447), (414, 52002), (428, 50301), (486, 44298), (621, 34668), (642, 33534), (729, 29532), (828, 26001), (963, 22356), (972, 22149), (1242, 17334), (1284, 16767), (1458, 14766), (1863, 11556), (1926, 11178), (2187, 9844), (2461, 8748), (2484, 8667), (2889, 7452), (2916, 7383), (3726, 5778), (3852, 5589), (4374, 4922)]