21304821916

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{491}}^1\times {\mathrm{4177}}^1$

素因数の和:4739

約数の個数: 72

約数和(自身を含む): 44289440496

約数和(自身を除く): 22984618580

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 491, 742, 982, 1484, 1964, 2597, 3437, 4177, 5194, 6874, 8354, 10388, 13748, 16708, 24059, 26023, 29239, 48118, 52046, 58478, 96236, 104092, 116956, 182161, 204673, 221381, 364322, 409346, 442762, 728644, 818692, 885524, 1275127, 1549667, 2050907, 2550254, 3099334, 4101814, 5100508, 6198668, 8203628, 10847669, 14356349, 21695338, 28712698, 43390676, 57425396, 100494443, 108698071, 200988886, 217396142, 401977772, 434792284, 760886497, 1521772994, 3043545988, 5326205479, 10652410958, 21304821916]

約数ペア:

[(1, 21304821916), (2, 10652410958), (4, 5326205479), (7, 3043545988), (14, 1521772994), (28, 760886497), (49, 434792284), (53, 401977772), (98, 217396142), (106, 200988886), (196, 108698071), (212, 100494443), (371, 57425396), (491, 43390676), (742, 28712698), (982, 21695338), (1484, 14356349), (1964, 10847669), (2597, 8203628), (3437, 6198668), (4177, 5100508), (5194, 4101814), (6874, 3099334), (8354, 2550254), (10388, 2050907), (13748, 1549667), (16708, 1275127), (24059, 885524), (26023, 818692), (29239, 728644), (48118, 442762), (52046, 409346), (58478, 364322), (96236, 221381), (104092, 204673), (116956, 182161)]