21727278

素因数分解:

$2^1\times 3^4\times {\mathrm{71}}^1\times {\mathrm{1889}}^1$

素因数の和:1974

約数の個数: 40

約数和(自身を含む): 49397040

約数和(自身を除く): 27669762

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 81, 142, 162, 213, 426, 639, 1278, 1889, 1917, 3778, 3834, 5667, 5751, 11334, 11502, 17001, 34002, 51003, 102006, 134119, 153009, 268238, 306018, 402357, 804714, 1207071, 2414142, 3621213, 7242426, 10863639, 21727278]

約数ペア:

[(1, 21727278), (2, 10863639), (3, 7242426), (6, 3621213), (9, 2414142), (18, 1207071), (27, 804714), (54, 402357), (71, 306018), (81, 268238), (142, 153009), (162, 134119), (213, 102006), (426, 51003), (639, 34002), (1278, 17001), (1889, 11502), (1917, 11334), (3778, 5751), (3834, 5667)]