21728728

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{7321}}^1$

素因数の和:7387

約数の個数: 32

約数和(自身を含む): 47446560

約数和(自身を除く): 25717832

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 106, 212, 371, 424, 742, 1484, 2968, 7321, 14642, 29284, 51247, 58568, 102494, 204988, 388013, 409976, 776026, 1552052, 2716091, 3104104, 5432182, 10864364, 21728728]

約数ペア:

[(1, 21728728), (2, 10864364), (4, 5432182), (7, 3104104), (8, 2716091), (14, 1552052), (28, 776026), (53, 409976), (56, 388013), (106, 204988), (212, 102494), (371, 58568), (424, 51247), (742, 29284), (1484, 14642), (2968, 7321)]