20897904

素因数分解:

$2^4\times 3^1\times {\mathrm{163}}^1\times {\mathrm{2671}}^1$

素因数の和:2845

約数の個数: 40

約数和(自身を含む): 54337792

約数和(自身を除く): 33439888

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 163, 326, 489, 652, 978, 1304, 1956, 2608, 2671, 3912, 5342, 7824, 8013, 10684, 16026, 21368, 32052, 42736, 64104, 128208, 435373, 870746, 1306119, 1741492, 2612238, 3482984, 5224476, 6965968, 10448952, 20897904]

約数ペア:

[(1, 20897904), (2, 10448952), (3, 6965968), (4, 5224476), (6, 3482984), (8, 2612238), (12, 1741492), (16, 1306119), (24, 870746), (48, 435373), (163, 128208), (326, 64104), (489, 42736), (652, 32052), (978, 21368), (1304, 16026), (1956, 10684), (2608, 8013), (2671, 7824), (3912, 5342)]