21539964

素因数分解:

$2^2\times 3^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{367}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 51849728

約数和(自身を除く): 30309764

約数列:

[1, 2, 3, 4, 6, 12, 67, 73, 134, 146, 201, 219, 268, 292, 367, 402, 438, 734, 804, 876, 1101, 1468, 2202, 4404, 4891, 9782, 14673, 19564, 24589, 26791, 29346, 49178, 53582, 58692, 73767, 80373, 98356, 107164, 147534, 160746, 295068, 321492, 1794997, 3589994, 5384991, 7179988, 10769982, 21539964]

約数ペア:

[(1, 21539964), (2, 10769982), (3, 7179988), (4, 5384991), (6, 3589994), (12, 1794997), (67, 321492), (73, 295068), (134, 160746), (146, 147534), (201, 107164), (219, 98356), (268, 80373), (292, 73767), (367, 58692), (402, 53582), (438, 49178), (734, 29346), (804, 26791), (876, 24589), (1101, 19564), (1468, 14673), (2202, 9782), (4404, 4891)]