21306848

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{739}}^1$

素因数の和:819

約数の個数: 48

約数和(自身を含む): 45314640

約数和(自身を除く): 24007792

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 53, 68, 106, 136, 212, 272, 424, 544, 739, 848, 901, 1478, 1696, 1802, 2956, 3604, 5912, 7208, 11824, 12563, 14416, 23648, 25126, 28832, 39167, 50252, 78334, 100504, 156668, 201008, 313336, 402016, 626672, 665839, 1253344, 1331678, 2663356, 5326712, 10653424, 21306848]

約数ペア:

[(1, 21306848), (2, 10653424), (4, 5326712), (8, 2663356), (16, 1331678), (17, 1253344), (32, 665839), (34, 626672), (53, 402016), (68, 313336), (106, 201008), (136, 156668), (212, 100504), (272, 78334), (424, 50252), (544, 39167), (739, 28832), (848, 25126), (901, 23648), (1478, 14416), (1696, 12563), (1802, 11824), (2956, 7208), (3604, 5912)]