21031884

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 55272672

約数和(自身を除く): 34240788

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 73, 106, 146, 151, 159, 212, 219, 292, 302, 318, 438, 453, 477, 604, 636, 657, 876, 906, 954, 1314, 1359, 1812, 1908, 2628, 2718, 3869, 5436, 7738, 8003, 11023, 11607, 15476, 16006, 22046, 23214, 24009, 32012, 33069, 34821, 44092, 46428, 48018, 66138, 69642, 72027, 96036, 99207, 132276, 139284, 144054, 198414, 288108, 396828, 584219, 1168438, 1752657, 2336876, 3505314, 5257971, 7010628, 10515942, 21031884]

約数ペア:

[(1, 21031884), (2, 10515942), (3, 7010628), (4, 5257971), (6, 3505314), (9, 2336876), (12, 1752657), (18, 1168438), (36, 584219), (53, 396828), (73, 288108), (106, 198414), (146, 144054), (151, 139284), (159, 132276), (212, 99207), (219, 96036), (292, 72027), (302, 69642), (318, 66138), (438, 48018), (453, 46428), (477, 44092), (604, 34821), (636, 33069), (657, 32012), (876, 24009), (906, 23214), (954, 22046), (1314, 16006), (1359, 15476), (1812, 11607), (1908, 11023), (2628, 8003), (2718, 7738), (3869, 5436)]