21727456

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:643

約数の個数: 48

約数和(自身を含む): 45559584

約数和(自身を除く): 23832128

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 53, 92, 106, 184, 212, 368, 424, 557, 736, 848, 1114, 1219, 1696, 2228, 2438, 4456, 4876, 8912, 9752, 12811, 17824, 19504, 25622, 29521, 39008, 51244, 59042, 102488, 118084, 204976, 236168, 409952, 472336, 678983, 944672, 1357966, 2715932, 5431864, 10863728, 21727456]

約数ペア:

[(1, 21727456), (2, 10863728), (4, 5431864), (8, 2715932), (16, 1357966), (23, 944672), (32, 678983), (46, 472336), (53, 409952), (92, 236168), (106, 204976), (184, 118084), (212, 102488), (368, 59042), (424, 51244), (557, 39008), (736, 29521), (848, 25622), (1114, 19504), (1219, 17824), (1696, 12811), (2228, 9752), (2438, 8912), (4456, 4876)]