21328344

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^1\times {\mathrm{83}}^2$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 59828340

約数和(自身を除く): 38499996

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 83, 86, 129, 166, 172, 249, 258, 332, 344, 387, 498, 516, 664, 747, 774, 996, 1032, 1494, 1548, 1992, 2988, 3096, 3569, 5976, 6889, 7138, 10707, 13778, 14276, 20667, 21414, 27556, 28552, 32121, 41334, 42828, 55112, 62001, 64242, 82668, 85656, 124002, 128484, 165336, 248004, 256968, 296227, 496008, 592454, 888681, 1184908, 1777362, 2369816, 2666043, 3554724, 5332086, 7109448, 10664172, 21328344]

約数ペア:

[(1, 21328344), (2, 10664172), (3, 7109448), (4, 5332086), (6, 3554724), (8, 2666043), (9, 2369816), (12, 1777362), (18, 1184908), (24, 888681), (36, 592454), (43, 496008), (72, 296227), (83, 256968), (86, 248004), (129, 165336), (166, 128484), (172, 124002), (249, 85656), (258, 82668), (332, 64242), (344, 62001), (387, 55112), (498, 42828), (516, 41334), (664, 32121), (747, 28552), (774, 27556), (996, 21414), (1032, 20667), (1494, 14276), (1548, 13778), (1992, 10707), (2988, 7138), (3096, 6889), (3569, 5976)]