128972456

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{509}}^1\times {\mathrm{1667}}^1$

素因数の和:2201

約数の個数: 32

約数和(自身を含む): 255204000

約数和(自身を除く): 126231544

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 509, 1018, 1667, 2036, 3334, 4072, 6668, 9671, 13336, 19342, 31673, 38684, 63346, 77368, 126692, 253384, 848503, 1697006, 3394012, 6788024, 16121557, 32243114, 64486228, 128972456]

約数ペア:

[(1, 128972456), (2, 64486228), (4, 32243114), (8, 16121557), (19, 6788024), (38, 3394012), (76, 1697006), (152, 848503), (509, 253384), (1018, 126692), (1667, 77368), (2036, 63346), (3334, 38684), (4072, 31673), (6668, 19342), (9671, 13336)]